When Sonny's friend from back home sends her photos from the prom, Sonny is upset that she's missed all the fun. To make up for it, Sonny throws a prom for all the kids on the studio lot.

Chad is filming a movie about his life, and he has cast Selena Gomez to play Sonny. While researching the part, Selena realizes Sonny and Chad have feelings for each other and spends the episode trying to help them overcome their denial.