While in detention, Rudy finds out about the magic chalk and he goes to Chalk Zone, a place where all the erased chalk pictures go to. He meets up with Snap, a picture of a superhero that Rudy drew in 2nd grade, and also this this monster that wants to hurt everyone. With Snap's help, Rudy is able to beat the thick headed monster.

Rudy brings his friend Penny to ChalkZone to help her find a formula, but Snap sees Penny as Rudy's girlfriend.