Noami grows spiteful as Annie and Ethan grow closer, causing her to deliver an unwelcomed surprise at Annie's sweet 16 party. Meanwhile, the school is all buzzing over the news that Ryan was given a leave of absence, and Adrianna discovers Navid's secret.

Naomi meets an intriguing mystery man at her new home; Silver's Valentine's Day surprise falls apart, but she and Dixon still manage to come together. Meanwhile, Annie's jealousy of Rhonda starts to wear on Ethan.

With prom night quickly approaching, Annie, Adrianna, Naomi, and Silver get glammed up by a famous stylist. A dateless Annie agrees to attend the event with the extremely nerdy Charlie, who is massively crushing on the popular girl. But when he realizes that her interest is purely platonic, a furious Charlie plots an evil revenge. Meanwhile, Dixon is nominated for Prom King, Ethan gets accepted into lacrosse camp, and Kelly and Harry work to get Liam on the right track.