Stupendous Man hears a cry of distress. He leaps to the edge of the building he's on and prepares to swoop down to the rescue. Stupendous Man didn't realize how high the building was, or that the winds at that altitude were tricky. Calvin sits at the top of the slide. Susie is behind him asking if he's going or needs a push. Calvin yells for her not to push him.

Calvin shows off the super hero outfit Mom made for him. It has a mask and cape. He says he can fight crime without anyone knowing his true identity. He asks Hobbes if he's seen any crimes. Hobbes wants to know why he cares that nobody knows his identity.

Mom tells Calvin to take off his outfit at the dinner table. Calvin says he's Stupendous Man. Mom tells him to stop being silly and do what she asked. Calvin says he needs to wear his costume for dinner. Mom says he won't. Calvin says Stupendous Man has a stomach of steel.

It's Stupendous Man, champion of liberty, defender of free will. Some fiend plans to establish a totalitarian system of rule. It's as he expected. It's his arch-enemy, Mom lady. Calvin has his hood and cape on, and Mom says she told him to go to bed. As Mom carries him up the stairs to bed, Calvin says Stupendous Man's powers are no match against his adversary. Stupendous Man is vanquished. After being placed in bed, Calvin wipes his cheek. He says this would have been plenty humiliating without the goodnight kiss. Mom tells him to take off the silly hood before he smothers in his sleep.

Mild-mannered Calvin is stuck doing homework on a beautiful Sunday. No one is watching. He dashes into the closet. This is a job for Stupendous Man, defender of freedom, advocate of liberty! A crimson streak blasts through the atmosphere, then heads back toward earth. Stupendous Man strikes the earth at an acute angle, using stupendous force. The earth slowly stops rotating and begins turning in the other direction. Stupendous Man turns the planet all the way around backward. The sun sets in the east and comes up in the west. It's soon 10:00 AM the previous day. Mom asks what Calvin is doing outside. She asks if he finished his schoolwork. Calvin marches along in his Stupendous Man costume, saying it's Saturday. He doesn't need to do it until tomorrow, thanks to Stupendous Man.

Mom asks Calvin why he's back downstairs. She asks if she didn't just send him to clean his room. Calvin replies "Twisted fiend! No four walls can hold Stupendous Man! You've been foiled again, evil Mom-lady". Mom bends down and gives Calvin a nasty look. She says "Oh, yeah". Calvin stumbles up the stairs with eyes spinning. He says her mind-scrambling eyeball ray has him going back upstairs to do her nefarious bidding.

It's Stupendous Man, lover of liberty. He notices Calvin (his 6-yr-old alter ego) has three pages of boring homework to read. It's tyranny! Stupendous Man could easily read the assignment with his high-speed vision, he has a bolder plan. The caped combatant concludes there's no need for homework if there is no school tomorrow.

Stupendous Man flies to the observatory telescope at Mount Palomar. With his stupendous strength, he carefully unscrews the giant lens and blasts into space with it.

Stupendous Man circles the earth with a 200 inch telescope lens. Aligning perfectly to the sun, the magnifying lens focuses the terrible solar energy....and fries a certain elementary school clean off the map. Stupendous Man flies into the bedroom window saying Calvin has no need of ever doing homework again. Liberty prevails!

Mom calls into the bedroom asking if Calvin is doing his homework. Stupendous Man recognizes his arch-nemesis, Mom-lady. He doesn't want her to discover his secret identity. He goes into the closet to change back into his alter ego, Calvin. Mom enters the bedroom looking for Calvin. Calvin, in the closet, notices that Stupendous Man's cape has gotten caught in Calvin's zipper. Mom opens the closet to see Calvin standing in his underwear. She says she can tell this is going to be a good one.

Calvin tells Hobbes that if they get out of line once, Rosalyn will kill them. Then, when Mom and Dad return, they'll get killed again. Hobbes says that's that. Calvin refuses to admit defeat. He runs into the closet saying things look grim for them, but not for .....Stupendous Man! Champion of liberty, foe of tyranny. Hobbes tells Calvin he's going to get into bed now and avoid the rush.

Stupendous Man streaks across the sky. The man of mega-might zooms to the rescue. Baby sitter girl is momentarily distracted. Rosalyn is on the phone with her boyfriend, Charlie. She says she's at the little monster's house again, but that he's been pretty good tonight. Stupendous Man is creeping up behind her.

Rosalyn is telling Charlie that Calvin's parents are so desperate to get out once in a while. Stupendous Man leaps up yelling that freedom and justice shall always prevail over tyranny. He knocks Rosalyn off the chair. Stupendous Man has the strength of a million mortal men. He tells Rosalyn to give up. Rosalyn grabs the phone and tells Charlie she'll have to call him back. She says he wouldn't believe what the cretin is wearing. Stupendous Man has a leglock on Rosalyn and says he fights with heroic resolve.

Rosalyn rolls her sleeves up and asks if Calvin wants to play rough. Stupendous Man thinks she must have super powers, too. Rosalyn tells him he has two seconds to get his caped butt in bed, or she'll put it there for good. Stupendous Man says the evil Amazon is using a psycho-beam to weaken his stupendous will. Rosalyn starts counting. Stupendous Man tries to resist. When Rosalyn says "two", Stupendous Man is off.

Stupendous Man is out the door. Rosalyn yells out that his parents told him to behave. She says they're not going to be happy when they hear about this. Mom and Dad are in the restaurant. Dad says that if they had bought a dog like he wanted, they could go out like this all the time. Mom says they came to relax and should talk about something else.

Rosalyn is outside with a flashlight looking for Calvin. Stupendous Man, in his treehouse, plans his strategy. Calvin goes back inside to his bedroom. He tells Hobbes that he made a stupendous dash when Rosalyn went around the house. He says she still doesn't know where he is.

Hobbes notices Rosalyn going around the house again. She still doesn't know Calvin is inside. Calvin changes from Stupendous Man back into Calvin. Rosalyn has seen the bedroom light and comes inside. Calvin tells Hobbes to get in the covers and pretend they've been reading in bed. Hobbes reminds Calvin that Rosalyn knows he attacked her and ran outside. Calvin says that was Stupendous Man. He's been in bed in his PJ's since 8:00. Hobbes asks if he thinks she's going to believe that. Calvin tells him his covers are here and his pajamas are here. It's as plain as can be.

Susie knocks on Calvin's door. Stupendous Man answers. Susie asks what he is doing. Calvin tells her he was just about to use his stupendous powers to liberate some cookies being held hostage on the top shelf of the pantry. He says duty calls, so he slams the door on Susie. A bolt of crimson streaks across the sky. He's off to save the day. Susie returns home. Her mom asks if they had an egg she could borrow. Susie says no one was home.

Calvin calls Dad at work. Dad asks if it's important. Calvin tells him to forget he called him "Dad". He says it's not Calvin. Dad tells him he has work to do and that he'll see him when he gets home. Calvin asks if he has any crimes to report. Standing in his Stupendous Man costume, Calvin says this secret identity stuff is hard to get used to.

Calvin and Hobbes are still looking at the snowball. Calvin says he can't throw snowballs at Susie if the earth's gravity has increased. Calvin says "This is a job for..." and runs off. Hobbes stands puzzled. Hobbes goes back inside the house to see Calvin rummaging through his dresser drawers. He has his Stupendous Man cowl on. As he tosses clothes aside, he says Mom must have put his cape in the wrong drawer.

Hobbes asks Calvin who this is a job for. Calvin replies "Stupendous Man". Calvin struggles with his pants. Hobbes asks if super heroes wear snow pants. Calvin angrily replies they do when there's snow out. Calvin is on his back, trying to get his pants on. Hobbes looks down on him and says this looks like a real job for Stupendous Man. Calvin tells Hobbes of course the zipper's going to get stuck if everyone stands around watching him.

Earth's excessive gravity is no match for Stupendous Man's strength. The masked man of might makes a gigantic snowball, flies high into the stratosphere, where he uses his stupendous vision to locate the diabolical arch-fiend, Annoying Girl. Susie is walking down the sidewalk.

Stupendous Man drops the snowball, taking advantage of earth's strong gravity. Susie lies on the sidewalk, covered with the snowball. Stupendous Man, sitting on a tree branch above, triumphs. He zooms back to resume his secret identity. Entering the bedroom, Hobbes asks Calvin if he saved the day. Calvin tells him justice reigns once more. From downstairs, one of Calvin's parents yells up that Susie's Mom just called. Calvin is going to be talked to.

Mom is talking to Calvin. She says Susie's mom said Calvin dropped a snowball the size of a bowling ball on Susie from a tree. Calvin says it couldn't have been him. He's mild-mannered. Mom crosses her arms and says Susie's mom described the hood and cape she made for Calvin. Calvin says it must have been Stupendous Man, and that Susie probably deserved whatever she got. Mom tells him he could hurt someone that way, and that if she ever hears of anything like this again, she'll take away his costume for good. Hobbes says this sounds like another job for Stupendous Man. Calvin says it actually doesn't sound like quite his type of job.

Susie is playing as Calvin comes up, declaring himself Stupendous Man. He runs off. Susie says virtual reality has nothing on Calvin.

To avoid detection, Calvin leaps into his locker to transform into Stupendous Man. Calvin can't find the handle to get out of his locker.

Calvin bangs on the locker door. He can't get out. He says this is a real job for Stupendous Man. He bangs on the door some more. He thinks this may even be a job for the custodian.

Miss Wormwood notices Calvin hasn't come back from the water fountain. Susie tells her Calvin might be at his locker, since he brought something to help with the test. Miss Wormwood walks down the hall, thinking "Five years until retirement". Inside the locker, Stupendous Man sees his nemesis, the Crab Teacher, coming for him.

Miss Wormwood opens the locker, and Stupendous Man comes out. Calvin spells stupendous, with a meaning for each letter. He gets stuck near the end and can't finish. Miss Wormwood brings Calvin back to class, complaining teachers need to also be psychologists.

Stupendous Man escapes from Miss Wormwood. He enters the classroom to do Calvin's test. Susie tells a classmate that she doesn't hardly even know Calvin.

Stupendous Man answers the test questions, then runs out of the classroom. On the way, he reminds the kids to always brush their teeth. The class sits with stunned expressions on their faces. Miss Wormwood comes in asking if Calvin has come in. Calvin walks in behind her, out of the Stupendous Man costume, wiping his mouth from his long drink.

Calvin tells Hobbes there aren't many heroes these days. He asks who is out there to inspire them with a personal example of virtue and self-sacrifice. He asks if they can look up to business leaders, politicians, celebrities. He says they're lucky if they don't end up in prison. Hobbes says that fortunately, if they can't get inspiration, they'll accept entertainment. Calvin dons his Stupendous Man hood and says that the hero business is up to him.