90210 - Episode 4.02 - Rush Hour - Official Synopsis

SORORITY GAMES --- In an effort to re-gain her status, Naomi (AnnaLynne McCord) rushes a popular sorority, where she, along with Annie (Shenae Grimes) go through sorority games. Annie finds out a shocking secret about new guy Jeremy (guest star Matt Cohen) that could affect her future. Liam (Matt Lanter) decides to keep the bar he bought on a whim and has a surprise guest from Alaska come into town, while Dixon (Tristan Wilds) finds an unlikely roommate in country boy Austin (guest star Justin Deeley), which could lead to trouble. The search for Navid's sister Leila (guest star Summer Bishil) forces Navid and Silver (Jessica Stroup) to enlist in Adrianna (Jessica Lowndes) for help, much to the dismay of Silver. Gillian Zinser also stars. Elizabeth Allen directed the episode written by Terrance Coli (#402).

The episode airs on September 20.

Source: CW