Mrs. Brinks promises to show the class her family heirloom, a compass belonging to Amelia Earhart, if they behave for at least 30 days. Just as Mrs. Brinks is about to show them the compass, Angela accidentally ruins the deal by chewing on bubblegum. Angela then formulates a plan to make it up to Mrs. Brinks with her birthday. Nanette writes a "three-act Greek tragedy" casting all of the students in roles. Angela's plan to use reverse psychology in hopes of getting the part of Hercules backfires when Nanette casts the role to Gordy Rhinehart. Instead, Angela gets cast in a variety of other roles, including Medusa, Prometheus and Atlas due to Nanette's displeasure in Angela's acting performance.
