Becca, a sixth-grade nobody, and Selfie St. Clair, the eighth-grade glamour queen, must team up to stop the disaster of a lifetime. Sloan "Selfie" St. Clair is the eighth-grade glamour queen of the school. Becca Birnbaum, sixth-grade nobody, accidentally zonks Selfie with a volleyball, and it only gets worse when she tries to do her a favor. She grabs the wrong shopping bag from the principal's office-- one containing a very personal item-- which Selfie immediately loses. They try not to panic... until they hear that the Biggest Prank Ever is about to happen. Can the school's oddest couple stop the disaster of a lifetime?