The Massively Mixed-Up Middle School Mystery follows the lives of Everett 'The Leader', Alyssa 'The Brains' and Riley 'The Rookie', junior high students who form the Junior Eye Detective Agency in order to solve cases that plague their classmates'; daily lives. In this movie, when the ultimate prank sends their principal under water, it';s up to Everett, Alyssa and Riley to put their super detective skills to the test, catch the perp, and save their school';s first dance in 40 years.