Calvin is pulled into a flying saucer. The aliens replace Calvin with a robot. The robot steals cookies, breaks a lamp, and throws away schoolbooks, all in front of Mom. Calvin tries to explain it to Mom, but she takes him to bed. Calvin looks at the stars.

Hobbes asks how much longer Calvin will repeat what he says. Calvin repeats what Hobbes said. Hobbes tells him to keep at it. Calvin repeats Hobbes' words. Hobbes reads from a book of philosophy. Calvin tries to copy what Hobbes is saying, but he can't keep up. Hobbes sticks out his tongue at Calvin. Calvin calls him a cheater.

Calvin plans to hit Susie with a slushball. Hobbes says some philosophers say true happiness comes from a life of virtue. Calvin thinks about it, and he drops the slushball. Calvin puts his toys away in his room. He does his homework and hands Mom a homemade card. Calvin shovels the sidewalk. He helps set the dinner plates and take out the garbage. He stops. He gets angry, runs outside, and hits Susie with a slushball. He tells Hobbes someday he'll write his own philosophy book. Hobbes thinks virtue needs some cheaper thrills.