Harold and George inspect the drawer from which Mr. Krupp produced the videotape. They find many confiscated items, including sling-shots and whoopee cushions, as well as every issue of Captain Underpants. They read every copy, laughing happily, then command Mr. Krupps—who is still hypnotized—to become a monkey and a chicken.

Harold orders Mr. Krupp to become The Amazing Captain Underpants. Krupp tears off his clothes and stands triumphantly before the boys. Standing in his underpants and a cape, he sings Captain Underpants trademark phrase “Tra-La-Laaaaa!” The boys laugh hysterically, then notice that Mr. Krupp, as Captain Underpants, is gone.

George and Harold see Krupp in the grounds below, running away. The boys figure that Krupp, inhabiting the psyche of Captain Underpants, is going to fight crime. They gather skateboards and slingshots from the drawer of confiscated items, as well as fake doggy doo-doo, and follow Mr. Krupp. They travel on skateboards, and bring his clothes and toupee with them.

George and Harold skateboard around town looking for Mr. Krupp. They finally find him outside of a bank, where he is threatening bank robbers with “wedgie power.” The robbers laugh hysterically at this unthreatening threat.