Miss Wormwood takes Calvin to the office to see the principal. Spaceman Spiff is captured and is being taken for torture. He knows the aliens are after the formula to the atomic napalm neutralizer. Spiff springs into action. The principal asks Miss Wormwood why Calvin is eating his hall pass.

Miss Wormwood calls to Calvin about not paying attention. Spaceman Spiff shoots the atomic napalm neutralizer at the snarling cur, but to no avail. Spiff runs off to a nearby cave, where he smells something awful. Suddenly, a light comes on, and Spiff finds himself in the midst of several monsters. Calvin runs out of the teachers lounge, as they ask who that was.

Spiff is being pursued. His hyper-freem drive fails. A frap ray nearly misses. Finally, Spiff is hit. He's going down and wonders if he'll make it. As Calvin lands on the ground after coming down the slide, he kisses the sweet ground. Miss Wormwood thinks maybe Calvin should play on the swings instead.

Miss Wormwood asks the class who will be the first to do his book report. Calvin, sitting at his desk with a smile on his face, is chosen. Calvin just sits there as Miss Wormwood calls his name again. Then, Spaceman Spiff pulls his death ray blaster as the monster approaches him.

The principal tells Susie and Calvin he wants them to pay more attention in class. Susie agrees. The principal tells them to return to their class. Susie heads off. Calvin just stands in front of the principal's desk as he repeats himself about going back to class. Spiff sets his blaster on "medium well" as the Zorg draws near.

Spaceman Spiff is going down. He fights to control his damaged spacecraft. Spiff careens through the alien canyon but ejects right before impact. Mom asks whether he's done running through the house or if he is going to fall down the steps again. Calvin thinks Spiff has regained consciousness at the feet of a sarcastic alien.

Miss Wormwood tells Calvin he's not paying attention again. Spaceman Spiff is trapped. He dives for the air lock. Miss Wormwood grabs his shirt as he's hanging out the school window. She tells him, "Nice try, Calvin".

Spaceman Spiff spies a Zarg. He readies his blaster. Susie turns around and warns Calvin that if he shoots her with that paper clip, she'll have him hauled to the principal's office so fast he'll think he's in a time warp. Spiff is confounded by his jammed blaster.

Spaceman Spiff is being chased by a scum being. He spots his hovering spaceship and heads for the ladder. As he climbs, the scum being is upon him, and he knows he's too late. Miss Wormwood has told Calvin three times that recess is over and to get inside.

Spaceman Spiff, in his spacecraft, closes in on the Zargons. He's going to teach that alien scum that virtue is its own reward. Susie asks Calvin what the capital of Poland until 1600 was. He replies "Krakow". Susie thanks him as Calvin keeps shooting at the Zargons...krakow, krakow, two direct hits.

Spaceman Spiff closes in on the alien vehicle. The alien is unaware of its imminent doom. Spiff readies his frap-ray blaster. Calvin has a book in his hand, standing on his desk, ready to smack Susie on the head. Susie calls for Miss Wormwood. Calvin calls for evasive action from the Gorkon death station.

Spaceman Spiff is in his spacecraft. He fires his hyper-jets and blasts into the fifth dimension. Into a world beyond human comprehension, where time has no meaning. Calvin sits at his desk in class thinking this class lasts forever.

Spaceman Spiff is trying to outrun aliens. He shifts into reverse. As the aliens pass, Spiff shifts to forward and chases the aliens. The aliens turn around, so Spiff shifts back into reverse. Calvin, riding in a swing, feels he's getting sick.

Spaceman Spiff crashes. The atmosphere is hardly breathable. Spiff looks for life, but notices a gelatinous blob of muck coming after him. His blaster is useless. He tries to escape, but the stench envelops him. Calvin is playing with his food. Susie tells him to leave the cafeteria's tapioca alone if he doesn't like it.

Spaceman Spiff is going to be interrogated by Zorkons. He looks at their implements of torture. At one particular device, he asks the Zorkon what the name of the device is. Calvin's gym teacher tells him it's a chin-up bar and to get on it. Spiff readies his daring escape.

Spaceman Spiff is hit. He plummets toward planet Zog. There's no place to land. His controls don't respond. His fuel explodes due to the stress. He has ten seconds to impact. He starts counting down...nine, eight. Miss Wormwood says "Well, Calvin?". He shouts "Seven". Miss Wormwood congratulates him on his correct answer for ten minus three. She thought he wasn't paying attention. Miraculously, Spiff makes a three-point landing. Spiff saves the day again.

Spaceman Spiff is forced to land on planet Zok. He surveys the landscape and goes for help. It's obvious the planet is uninhabited. Spiff is marooned on a lifeless planet. Calvin looks around his classroom and sees all the empty desks. As he runs out, he wonders why no one tells him when the lunch bell rings.

Spaceman Spiff fights the controls of his spacecraft. He crashes on an alien planet. He's marooned on a hostile planet. He sees there is no hope for food and water. A hideous alien approaches. In his weakened state, Spiff is no match for the monster. The monster hands Spiff a sandwich and some lemonade. Mom tells him to bring the dishes in when he's done.

Spaceman Spiff is in a dungeon on the planet Zog. A guard leads Spiff to the interrogation room. The inquisitor says he finally gets to meet the famed Spaceman Spiff. He trusts Spiff is enjoying his visit. Spiff calls him a maggot from Mars and says he'll never give in. Calvin is hiding behind the scale with the doctor on his knees telling Calvin not to make him recant his Hippocratic oath.

Spaceman Spiff has been captured by the hideous Zorgs of planet X-13. He looks for an avenue of escape as he's led through the dungeon. He's brought before the Zorg despot. The leader has been waiting for this moment. He tells Spiff he has information they want. If Spiff cooperates, they'll kill him painlessly. Calvin asks the twisted space crustacean what he wants. The reply is "a summary of Lewis and Clark's expedition to the Pacific". Calvin tells Miss Wormwood that wild Zontars couldn't drag that information out of him. Miss Wormwood asks if he didn't read his assignment.

Spaceman Spiff flees the scum beings of planet Q-13. He turns his spaceship around to face the adversary. He tightens his grip on his death ray trigger. It doesn't work. He tries his mertilizer beam. It doesn't work. Neither does his phospho bombs nor his mordo blasters. Nothing is working. At his desk, Calvin is saying "1812! Gettysburg! 16 fluid ounces! I before E! Thomas Edison!" The teacher asks if someone who has been paying attention can help Calvin.

Susie warns Calvin their paper is due on Monday. He's goofed around all week. Susie tells him she'll let the teacher know she did all the work if he doesn't do his part over the weekend. Susie asks if she's getting through to him. Spaceman Spiff says the alien seems to be trying to communicate.

Spaceman Spiff walks along the planet's terrain. The ground begins to shake. It's a Zorg. Spiff runs for cover, but the Zorg is upon him. The blaster has no effect. Spiff is taken to the Zorg's cave, where there is a vat of boiling water. He's about to be cooked alive. Mom tells Calvin to get into the bathtub. Calvin asks if she doesn't want to lean way, way over and test how hot the water is.

Spaceman Spiff crash lands on the planet Mok. Ominous figures appear on the horizon. He fires his death ray zorcher, but he's outnumbered. He's taken prisoner and taken to a dungeon. Spiff won't talk to the creatures. One of them orders Spiff taken to the interrogation room and to have his hair washed. Mom is trying to bathe Calvin. He tells the sinister fiend she got soap in his eyes on purpose. Mom replies it might not happen if he'd stop thrashing around.

Dad is paddling the canoe with Calvin at the bow. Dad says what a day. He talks about the fresh air, being up at dawn, the tranquility, no demands, phones, or pressures. He says "Isn't this the life". Spaceman Spiff, a prisoner on the Zog space galley, plans his daring overboard escape.

Spaceman Spiff lands on an uncharted planet. He sets out in search of life. It's a strange planet, it's surface is soft and porous. Curious geysers blast hot air. Suddenly, it dawns on him. He's not on the planet surface. He's on a reclining alien. Calvin aims his dart gun at a sleeping Dad. Calvin says that our hero sets his death ray blaster.

Spaceman Spiff lands on the planet Zokk. He prepares to explore the surface. Spiff's first step sends him careening through the sky. Spiff realizes Zokk has only a fraction of earth's gravity. With practice, our hero finds he can bound effortlessly across the landscape. Dad opens the bedroom door and yells to Calvin to quit bouncing on the bed and go to sleep.

Spaceman Spiff's spacecraft is immobilized. Our hero must climb out and fix it in zero gravity. Upside down, Spiff clings to the spaceship. One slip will send him hurling into the horrors of the infinite beyond. Calvin is hanging upside down, holding onto both sides of the doorway while Mom tries to push him out the door to go to school.

Spaceman Spiff finds himself on the planet surface. An alien approaches. In the blinding light, Spiff can't tell whether the alien is friendly or hostile. Mom comes in to yell at Calvin who's still sitting on his bed. She tells him to get ready for school. Spiff, being carried off by the alien, says that it's definitely hostile.

Calvin is tossed out the door. Mom tells him the bus will be by any minute. Get going! Spaceman Spiff, captured by the Zogwargs, is being transported to the labor camp. Our hero hatches a plan. He makes his break. Using the planet's weaker gravity, our hero is away like a shot. Mom looks out the window. She says she sees the bus, but why doesn't she see Calvin?

Spiff escapes! Dad asks if Calvin got on the bus. Mom says she didn't see. Dad mentions he saw someone darting behind a tree. They look and see it again. Dad asks if that's Calvin. Spiff inflates the emergency jet pack he keeps in his pocket. The Zogwargs have spotted him.

Mom gets on her coat and tells Calvin to get over there. Our hero blasts off on his jet pack. Another daring escape for the intrepid Spaceman Spiff. The Zogwargs are on rocket scooters. Spiff fires his death ray blaster. Calvin is throwing snowballs at Mom as she chases him. She tells him he's digging his own grave.

Mom tells Calvin to eat his dinner. Spaceman Spiff is held over a pit of putrid pasta. Our hero's mind races furiously. The aliens say that he's had his chance. Let's make him eat. Calvin looks surprised, points behind Mom and Dad, and tells them to look behind them. When they look, Calvin runs off. One alien says the human scum has escaped. The other says tomorrow morning, he'll have cold manicotti for breakfast.

Spaceman Spiff blasts across the galaxy. Miss Wormwood asks Calvin to demonstrate the next problem. A Zok death sloop appears and fries Spiff's stabilizers. He hurls out of control toward his doom. Calvin writes the math problem on the chalkboard. The situation is desperate. What can our hero do? He downshifts his spacecraft and...stalls. Calvin writes a bunch of numbers and lines on the board. The class bell rings. Oh, darn, out of time. Spaceman Spiff once again beats all odds to save the day.

Spaceman Spiff is going down over planet Gork. The planet is inhabited. Spiff's stabilizers refuse to respond. Our hero's going to crash. This spells disaster! Calvin is startled by the teacher calling his name. He spells disaster. The teacher congratulates him for paying attention. Once again, Spaceman Spiff beats all odds to save the day. The teacher tells him he can sit down. He's standing on his chair, fists clenched together.

Spaceman Spiff is being pursued by scum beings. Spiff's only chance is to release a giant smoke cloud behind his spacecraft. Miss Wormwood is standing next to Calvin, who's clapping the erasers together into a billowing cloud. The principal opens the door for Calvin, who can't believe it's not even 8:30 yet.

The muck monsters of Mordo are closing in on Spaceman Spiff. They fire at them, but just miss. He tries to fly through the rings of the planet below. The monsters veer off, afraid to follow Spiff. Swerving left, right, up, and down, Spiff pilots around each hurling missile. POW! Our hero's going down. Moe has hit Calvin with a ball. Calvin, lying against a wall, says he hates playing "dodge ball" in gym class.

Spaceman Spiff cruises over Planet Quorg. Our hero explores the peculiar rock formations, looking for life. The rock formations are too peculiar. Spiff suddenly realizes this landscape was not created by geological forces. Spiff hits the thrusters. The formations are footprints. While Spiff was searching for alien life, it was searching for him. Spiff is sure it wanted the earthling for dinner. Calvin sees footprints in the snow, while he hears his name being called to dinner. Calvin runs the opposite way.

Spaceman Spiff lands on Planet Gorzarg-5. He sets off across the desolate terrain in search of help. In the distance, methane clouds rain sodium hydroxide, a caustic alkali. The downpour was too heavy for the ground to absorb. A steaming river of corrosive liquid rushes toward our hero. Spiff scrambles to higher ground, but the flood continues to rise. Our hero is trapped. How could things get worse? Calvin is leaning across the bathtub as Mom tells him to just get in.

Spaceman Spiff is marooned on the most distant planet in the galaxy. There's no hope of rescue from this bleak world. Spiff tries to repair his disabled spacecraft. CRACK! There's a fly ball to left field. Calvin says there is a commotion on the horizon. Aliens! Calvin says Spiff grabs his blaster.

Spaceman Spiff zooms to the surface of Ahnooie-4. He sets off to search for sentient life. Spiff only discovers a hideous blob so stupid it just stares completely straight ahead, unaware of anything around it. Our hero decides to put the blob out of its misery. Susie yells to Miss Wormwood that Calvin's shooting spit balls. Perplexed by the blob's resilience, Spiff adds more juice and prepares to fire again. A giant creature comes up behind him.

Calvin sits at his desk with teeth gritted. He says Spiff is being held prisoner by hideous aliens. He wonders what they want with him. Spiff is called before the alien potentate. It becomes clear Spiff is going to be sacrificed....to appease the evil god they call "Nollij". Miss Wormwood tells Calvin to go to the blackboard.

Calvin, looking at the math problem on the board, says our hero thinks fast. He slowly reaches for the tiny atom blaster concealed in his belt. He turns and tells the bloodsucking, mutant chromosomal disasters that he's out of there. Miss Wormwood tells Calvin to give her the rubber band right this minute.

Spiff escapes. The smelly corridors of the fortress are deserted. All the aliens had gathered for the spectacle of our hero's demise. The space explorer makes it to the planet surface, but the alien queen is in pursuit. Miss Wormwood yells for Calvin to come back to the room. Spiff jumps into his spacecraft and blasts off. He's safe!

Mom is surprised to see Calvin at home. It's not even noon yet. Calvin tells her they were let out early due to a gas leak. Mom wonders if the school knows he left. She says she's going to call the school. Calvin tells her no one is there. Everyone was evacuated. Mom calls anyway. Spiff hadn't counted on running into a Zark enforcer ship. Spiff's evasive maneuvers come to naught.

Calvin is excited that not only will he ace the quiz, he'll win a quarter from Susie when he gets a better score. He reads the first problem, 6 + 5 =. He thinks about it. Spaceman Spiff approaches the sixth planet of the Mysterio system.

Spiff commands the red spacecraft breaking through the clouds of Planet 6. He reflects on his unusual mission, to somehow crash Planets 6 and 5 together.

Spaceman Spiff drops an anchor onto the Planet 6 surface. Spiff downshifts and guns the motor. The planet slowly moves, towed by our hero. It breaks orbit and speeds toward Planet 5.

Planet 6 is about to collide with Planet 5. Our hero cuts loose the anchor and flies to safety. The planets grind and shatter with awful force. Planet 5, being smaller, is crunched to dust. Only Planet 6 remains. Calvin answers the problem....6 + 5 = 6. The teacher calls time. Calvin is horrified. He's only answered the first problem.

Spaceman Spiff explores a new planet. The only sign of life is a strange lichen growing on the rocks. Spiff bends down for a better look. It's not lichen. It's tiny trees on tiny farmland. Looking ahead, Spiff sees a city, with skyscrapers an inch high. The planet is inhabited. Our hero reflects that human scale is by no means the standard for life forms. To drive the point home, a blimp-sized monster appears over the hillside. Calvin has been playing with ants. Moe is making fun of Calvin by yelling to one of his friends. Calvin, slowly reaching for a rock, says Spaceman Spiff reaches for his stun blaster.

Spaceman Spiff crashes on Planet Plootarg. He sets off in search of a service station. He sees the Zarches have followed him to the planet's surface to finish him off. The planet's soft, granular ground makes him easy to track. He runs backwards, so his tracks show him going the opposite direction. By continuing past a hiding place and doubling back, Spiff fools the aliens. Calvin, up in a tree, looks down at Mom and Dad. They're yelling that it's time to go in. Dad says he knows Calvin went this way, and that they'll find him.

Spaceman Spiff cruises over the desolate dunes of an uncharted planet. There is no vegetation. Millions of years of harsh exposure without an atmosphere has swept the surface clean. Crossing a rift, the rocks abruptly change color. A huge mountain rises out of the plain. Our hero pulls up. Spiff discovers it's not a mountain at all. The whole landscape is bedding for a horrendous monster. Dad sleepily looks to see what time it is. Calvin, next to Dad in bed, says the creature appears hostile. Our hero readies a hydro bomb. Calvin has a glass of water poised to douse Dad.

Calvin darts out of the classroom. Spaceman Spiff flees his Bloatoid captors. He scrambles into his spacecraft. He hits the hyper-thrust drive. He's soon just another speck in the infinite sea of outer space. He's free to roam the heavens in man's noble quest to investigate the weirdness of the universe. Outside, Hobbes is happy Calvin could come home so early. Calvin suggests they go exploring and find some gross bugs. Inside, Mom answers the phone. The school tells her what happened.

Spaceman Spiff flies over an uncharted planet and notices an alien. Spiff reflects that weirdness is nature's way of adapting life to its environment. He sees the monster. He wonders what circumstances of evolution made a creature so ugly. Calvin is staring at Susie. She tells him to get away from her. Spiff's field guide says the creature is a "gurl".

Spaceman Spiff pilots his craft at high speeds. Spiff discovers galaxies and planets not charted. He lands on worlds not explored, confronting species never encountered. He's a cosmic pioneer, boldly facing the unknown. Mom gives Calvin a plate of food. He cringes, saying he's never had it before and won't eat it.

Spaceman Spiff is pursued by hostile aliens. Spiff dives toward the mysterious world below. The aliens are still on his trail. He flies through a tight arch, hoping the aliens will crash as they follow. Calvin is under a table, with Mom grabbing at his feet. Calvin says the ol' battleship is surprisingly maneuverable. Mom says Calvin is going to bed if she has to chase him all night.

Calvin gets a grade of "F". He complains that if he's not learning the material, Miss Wormwood must not be a very good teacher. She says something, but Calvin imagines Spaceman Spiff facing a horrible alien. After she's finished, Calvin asks what she just said.

Spaceman Spiff hops out of his craft. There is indication of aliens. He crouches behind a boulder listening to aliens talk about him. He bursts into the open, shooting his death ray blaster. He yells he'll give the aliens something to talk about. Calvin has shot rubber-tipped darts at Mom, Dad, and their guests. Mom chases Calvin. Later in bed, Calvin says Spiff reflects on his miscalculation. He'll revisit the planet, this time with more ammo.

A Zokk circles above a planet where Spaceman Spiff's spacecraft has crashed. Spiff crawls across the sun-baked land. An alien comes over, tells him to put on sun screen and wear a hat if he's going to be outside. The alien walks off telling Spiff to have some common sense. Mom tells Calvin not to give him that look. Spiff survives, fixes his ship, and goes to find a more temperate climate with fewer aliens.

Spaceman Spiff makes some system checks. He prepares for countdown. Calvin watches the clock in the classroom. Spiff blasts off, flying to his home. Mom asks how his day went. Calvin tells Mom he enjoyed coming home.

Spaceman Spiff's craft plunges into the water. He climbs out swimming and is attacked by fish. Then a giant creature comes out of the water behind him. The creature asks if the water is too cold. Spiff says no. Mom leaves the bathroom saying he should stop his infernal screaming.

Spaceman Spiff is stranded on a planet, captured by a horrible yukbarf. The alien says to take Spiff to the dungeon. It looks like a living room. Spiff asks what kind of dungeon this is. He asks if they aren't going to torture him. The alien says yes. He asks Spiff to sit to discuss wholesome principles. Dad tells Calvin life is tough, and suffering builds character. He says virtue is its own reward, and nothing worth having ever comes easy. Calvin yells.

Spaceman Spiff lands on a bizarre planet. A mysterious mist arises out of nowhere. Spiff can't see a thing. At school, Calvin is at his desk. Miss Wormwood is explaining a math problem. Calvin says our hero's in a total fog. He says the atmosphere is a powerful sedative. Spiff can't keep his eyes open. Miss Wormwood stands by his desk as his head drops on the desk. Spiff is hanging upside down from ankle locks in a dungeon. He says our hero suddenly comes to.

Spaceman Spiff gazes across the landscape. He wonders what dangers lie ahead. He wonders what bizarre occurrence he will be the first to witness. Spiff keeps looking across the expanse. He throws a few rocks. Spiff sighs. Calvin goes back inside. Hobbes comes with him, saying that if he couldn't find any weirdness, they'll have to make some.

Spaceman Spiff flees the bug beings of Zartron-9. Our hero swings around and readies his computer-guided death ray blaster. It's taking a long time to boot up. Finally, it does, and Spiff selects "blaster". He gets pull down settings and a dialog box. He makes his selections, but the screen doesn't change. He tries "F1" for help. He goes through the choices. None of them is correct. He hadn't set the number of volts. He enters it and gets an "invalid setting" indication. KRAKK! Spiff is hit and is going down. Dad can't get his computer to boot up. He asks if someone has been playing with it. Calvin walks by and says the whole thing went down, but he jumped clear at the last second.

Spaceman Spiff is stranded on a distant planet. To survive, he must find food. Spiff follows a scavenger Mordon. There may be a fresh kill nearby. Due to the stench, our hero becomes a vegetarian on the spot. The grasses can't be eaten. The fruit is poisonous. Weak and despairing, Spiff looks into a frozen geyser pit. Ice cream sandwiches! Our hero is saved! Susie tells him that isn't very healthy. Calvin mumbles he only needs to survive until he can escape.