90210:

Kelly returns from seeing Dylan and reveals to Silver what happened between her and Dylan during her trip and she also confronts Ryan over his relationship with Kim, who under orders from Harry and the school board, has taken a paid leave of absence. Naomi decides to make Annie and Ethan's life a misery. She fakes a crying fit with Annie in an attempt to make her feel bad. Then Naomi invites Annie's ex, Jason, after stealing the number out of Annie's phone, to her Sweet Sixteen in an attempt to ruin it after Naomi sees Annie and Ethan kissing.

Adrianna has dinner with Navid and his large family. She's surprised to find that Navid has such a massive house and also finds out that Navid is a virgin. During a catfight between Annie and Naomi, over the use of Jason to ruin the party, Harry's illegitimate son, Sean, surprises the girls by showing up at the party. Kimberly reveals she is a cop and Ryan is cleared.