Calvin wants to dig for slugs and worms because they're gross. Hobbes thinks that's why they avoid them. Calvin explains that if they avoid them, they can't dare each other to eat one. Hobbes turns and runs away. Calvin asks if he doesn't like to have fun.

Calvin asks Susie if she dares him to eat a worm. Susie thinks eating five would be disgusting, but she doesn't know about just one. Calvin is shocked she wants him to eat five. He goes to dig more worms. He wonders who'd have thought disgust would be so inflationary.

Calvin has five worms and tells Susie she'll have to pay 50 cents to see him eat them. Susie says she'll pay a penny a worm. Calvin asks what happens if he goes to the hospital because of eating the worms. Susie offers another nickel if he goes to the hospital. Calvin wants to see the two nickels first.

Calvin asks for the nickel to eat the worms. Susie says she'll pay after he eats the worms. He asks for two cents up front. Susie won't pay until he does the work. Calvin thinks the guy eating the worms would call the shots. Susie offers that if you're calling any shots, you're not eating worms.

Calvin starts to eat the worms. He pauses, explaining how slimy and dirty the worms are. He peeks at Susie while saying how much closer he's getting to eating the worms. He tells Susie she can run away screaming at any time. Susie won't with her nickel on the line.

Mom asks Calvin what he's doing. Calvin tells her he's eating worms for a nickel. Mom says he isn't, and she takes him home. Mom tells Susie it's mean to take advantage of kids with no common sense. Calvin is relieved. He thanks Mom. Mom says if she hasn't seen him in two minutes, there's trouble.