When popular sorority girl Sherry Marshall befriends Mallory to get close to Alex, Mallory brings them together in hopes of joining Pi Nu but her plan backfires. Mallory's thrilled when Sherry chooses her for a science project partner, though the snobbish girl's ulterior motive soon surfaces. Eager to join the sorority, Mallory persuades Alex to escort Sherry to the Pi Nu dance. She even agrees to his condition that she attend the dance with the adoring, nerdy Skippy Handleman.