Calvin is walking along a wall yelling for Hobbes. Susie asks if Calvin would like to join her tea party. Calvin angrily declines, saying he's looking for his friend who's been kidnapped by a dog. Susie sits at her tea set talking to Mr. Tiger (Hobbes) about how rude Mr. Calvin is.

Calvin decides to ask Susie to keep an eye open for Hobbes. When he goes back to tell her, he sees Hobbes at the tea set. Calvin kisses Susie's hand and thanks her profusely for finding Hobbes. Susie talks to her rabbit about what a gentleman Mr. Calvin is, but notices all the cookies are gone.

Susie comes over with Mr. Bun to play house. She and Calvin can be the parents, Mr. Bun and Hobbes the children. Calvin doesn't like that idea. He tells Susie he's not going to drop his big plans with Hobbes so he can play with a stuffed rabbit. Susie angrily says she doesn't know why he always plays with his tiger and never with her and Mr. Bun. She says he's just mean. Calvin dismisses Susie by telling her to go play in a microwave. Calvin tells Hobbes girls are like slugs. They probably serve a purpose, but it's hard to imagine what.

A woman comes home and tells her husband that she stopped at the hospital on the way home. She brought home their new baby. The husband doesn't want a baby. The woman cuddles the baby, which is actually a rabbit. The husband wonders why their baby is a rabbit. The woman says it's not a rabbit, it's a baby boy. The husband says it looks like a rabbit to him. The woman wants to pretend it's a baby. The husband says he won't. Calvin walks away, saying playing "house" makes him sick. Susie doesn't understand why he'll pretend with his tiger, but not with Mr. Bun.

In his underwear, Calvin walks up to Susie and says that he's Tarzan, king of the jungle. Susie asks if Calvin's Mom knows he's over there in his underpants. Calvin dejectedly walks off saying he doesn't think Jane ever said that to Tarzan.

Susie gives Calvin an invitation to a milk and cookie party. Calvin declines. He wouldn't attend if she paid him. Susie doesn't care and walks off. She calls Calvin a jerk and says she went to all the trouble to set up the table and chairs. She says to Mr. Bun they can have a nice party by themselves. Calvin happily tells Hobbes they showed her. Hobbes wonders what kind of cookies they were. Calvin and Hobbes go to the party. Susie is happy. Calvin says they don't attend parties, they crash them.

Susie is playing, when Calvin comes over with a bucket. Calvin is wearing a mask. Calvin starts a poem. He tells Susie please do what she's told. There is a bucket, of water, ice cold. He says to please dump in on him, not to hesitate, do it A.S.A.P. Susie looks at him, while Calvin stands with eyes closed. Susie grins evilly. Calvin walks off with the bucket on his head, dripping water. Calvin shakes his fist at Hobbes. Calvin warns him to wait until he touches the "pernicious poem place". They're playing Calvinball.

Susie is playing in her house, and the doorbell rings. She answers it, to find a snowman's head on her step. She goes over to Calvin's house and tells him he needs professional help. Calvin asks what makes her think he did it.

Calvin is trying to determine whether there is a universal moral law. He says he'll throw his water balloon at Susie, unless he receives some sign in the next 30 seconds. He says the universe has the power to stop him, and he'll accept the sign. Nothing happens, so Calvin hits Susie with the balloon. She chases Calvin. Lying on the ground, beaten up, Calvin laments the universe gives the sign after you've done it.