An evil principal obsessed with spitballs drives a wedge between Jimmy and Craig's friendship, and threatens to kick Robin out of school. Meanwhile, Crocco shocks Golly when he tells him he's not his best friend.
Yancy holds a boy-bashing sleepover, which upsets Jimmy after Robin shows up. Elsewhere, Jimmy's dad takes a space joyride and Dolly loses touch with her feminine side.
Jimmy thinks he sees ghosts in an attic classroom, which Craig spots as a moneymaking opportunity. Elsewhere, Sonny hatches a new plan to get into Jimmy's brain.
A reporter for the school newspaper does a story on Jimmy, but she's secretly investigating Craig and his bootleg soda operation. Elsewhere, Yancy gives Sonny romantic advice.