Jason and Michelle set off a series of practical jokes on board the ship. None of which turn out to be very funny to their victims. Then the crew is asked to act as substitute teachers at the Academy. Jason and Michelle help out and see what it's like to be at the wrong end of a practical joke. Cavitus infiltrates the school in an attempt to defeat the Penguins. Naturally everything comes to a head, and Penguins learn a lesson that a joke isn't funny when it hurts somebody. Cavitus escapes and the Penguins learn that Bert the Hamster and Cavitus are one and the same!

Michelle is troubled, feeling like she isn't pretty. As she wrestles with her outward appearance, she and Jason join the Penguin crew as they head to the MISO GUAPO beauty products convention where Zidgel is supposed to deliver a speech. Through a bizarre Galeezel accident, Zidgel and Kevin switch bodies, and mayhem ensues.

Jason is feeling put upon by everyone. It seems he is being criticized at every turn, so he runs away to be confronted by Cavitus and the Lizard King.