After returning from summer break, the students of Clone High become acquainted with their new science teacher, Professor Hirsute. Meanwhile, a newly friendless Joan receives an invite from the only club that will take her as a member.

Scudworth takes Frida under his wing, causing the would-be artist to consider a more lucrative career… in competitive snorkeling.

When Scudworth names Joan principal for the day, she tries to win her former friends back with an exclusive in-school soiree… that soon gets out of hand.

Joan, Abe, and the rest of the gang find themselves saddled with summer jobs at the theme park of Scudworth’s childhood dreams. Meanwhile, Candide’s plan to wipe Cloney Island off the map threatens the future of Clone High.