Calvin prepares a snowball to throw at Susie. He tells Hobbes to watch him knock her fillings loose. Calvin throws the snowball. PIFF! It falls a couple feet away. They look at the fallen snowball. Calvin tells Hobbes he thought earth's gravity felt exceptionally strong today. Hobbes figures that explains why Calvin spilled his oatmeal down the heater that morning.

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.