Episode 1 : Up in Smoke
In the season four premiere, the gang from Beverly Hills have graduated from high school. Naomi has spent the summer dealing with the shocking news of her pregnancy and quickly discovers she doesn't have the status at college that she did in high school.
Episode 2 : Rush Hour
In an effort to re-gain her status, Naomi rushes a popular sorority, where she, along with Annie go through sorority games. Annie finds out a shocking secret about new guy Jeremy that could affect her future.
Episode 3 : Greek Tragedy
After making an enemy in sorority president Holly, Naomi finds unusual allies who help her get revenge. Annie, short on money for sorority dues, must figure out a quick way to come up with the cash.
Episode 4 : Let the Games Begin
Navid surprises Dixon with some studio time to apologize for messing things up with a music producer, where Dixon feels the pressure to create a hit song. Naomi plots revenge to take down rival Holly and her sorority during the Greek games.
Episode 5 : Party Politics
Silver is asked to make campaign videos for political candidate Marissa Harris-Young who is running against Teddy's Uncle Charles for public office. Teddy runs into an old flame and Annie gets stuck with Leila during an important date.
Episode 6 : Benefit of the Doubt
Liam gets offered a modeling job after an agent sees the commercial for his bar, while Annie finds herself starting to fall for an unlikely guy. During a charity talent show event to raise money for an experimental cancer treatment for Raj, Naomi is determined to win the contest in order to show up Austin's out-of-town visitor Sally.
Episode 7 : It's the Great Masquerade, Naomi Clarke
Naomi has to work with her arch-nemises Holly to throw a campus costume party, leading to unfortunate consequences. Navid's plan to bring down his Uncle Amal is threatened, while Silver discovers that political candidate Marissa Harris-Young is not who she seems.
Episode 8 : Vegas, Maybe?
The gang heads to Las Vegas, where Naomi meets Austin's dad, and country superstar Judd Ridge.
Episode 9 : A Thousand Words
Silver's video of Teddy's Vegas wedding is leaked to the press, and has damaging effects on his uncle's campaign. Liam's modeling career is taken to the next level by Shelia and Annie is determined to help Dixon, even though the help he needs comes at a high price.
Episode 10 : Smoked Turkey
Dixon tries to pursue a relationship with a resistant Adrianna, while Ivy and Raj's arguing takes a toll on their relationship. Liam plans a holiday dinner for the gang, and an unexpected guest shows up.
Episode 11 : Project Runway
Dixon struggles with temptation as he tries to make his way back into the music world, while Annie confronts Jeremy, who stands in the way of her inheritance. Naomi and Holly embarrass themselves in front of Janice Dickinson at a fashion show, while Navid reaches a breaking point with his uncle.
Episode 12 : O Holly Night
Naomi is asked by her new party planner boss Rachel to oversee her arch-nemesis Holly's birthday party, while Annie breaks into Jeremy's apartment in a desperate attempt to get the proof she needs to keep her inheritance.
Episode 13 : Should Old Acquaintance Be Forgot?
Naomi embarrasses herself in front of her boss Rachel in an attempt to get over her break-up with Austin. Dixon and Adrianna are booked to perform at a club, where they realize that working together might be a bad idea.
Episode 14 : Mama Can You Hear Me?
Naomi is determined to fix the relationship between her boss Rachel and her daughter Holly which forces Holly and Naomi to work together. Greg asks Silver to move to New York with him and Navid finds out some shocking information about Greg's daughter.
Episode 15 : Trust, Truth and Traffic
The All-American Rejects perform. Annie has to make a decision that could expose her work as an escort when Dixon gets arrested in connection with a fire at a sorority house. Adrianna and Silver attempt to put their past behind them, which results in disaster for Silver's relationship with Greg.
Episode 16 : No Good Deed
In an effort to put her inheritance to good use, Annie volunteers to organize a big charity fundraiser. When Naomi takes drastic measures to land her first event-planning client, her big plan back-fires.
Episode 17 : Babes in Toyland
Naomi's sister Jen arrives with her son for a surprise visit. Adrianna and Dixon land a meeting with a major movie producer to discuss music on his next film, but are sabotaged by Vanessa.
Episode 18 : Blood Is Thicker Than Mud
Naomi is convinced that Annie's new business partner P.J. is the perfect man for her, but discovers her sister Jen is also interested in him. Adrianna and Dixon land a spot in a music festival, where Train performs and a record executive (guest star La Toya Jackson) offers Dixon a recording contract.
Episode 19 : The Heart Will Go On
Dixon collapses while arguing in the recording studio with Adrianna. In the hospital, they run into Liam who is with Silver to support her during a test to detect if she has the breast cancer gene. Ivy finds out Raj (guest star Manish Dayal) still has cancer and is in the hospital, while Annie meets a new guy Caleb (guest star Robert Hoffman) and discovers he is a priest. AnnaLynne McCord and Michael Steger also star.
Episode 20 : Blue Ivy
PJ (guest star Nick Zano) proposes to Naomi and Annie discovers he needs to get married in order to get the rest of his trust fund. Dixon confesses to Navid that he signed a record contract but admits he did not tell Adrianna because the label didn't want to sign her. Dixon also accepts a gig to play back up for Haley Reinhart, but doesn't tell Adrianna. Liam asks Vanessa (guest star Arielle Kebbel) to move out and discovers she has emptied their joint bank account. Gillian Zinser also stars.
Episode 21 : Bride and Prejudice
Naomi's friends worry that she is rushing to get married, so Naomi and PJ (guest star Nick Zano) decide to throw a small party so everyone can get to know him. Austin (guest star Justin Deeley) returns to Los Angeles and offers to be Adrianna's new manager, suggesting she give country music a try. Caleb (guest star Robert Hoffman) is concerned Ivy might not be emotionally stable, while Annie finally admits to Caleb that she is falling for him. Meanwhile, Silver feels conflicted about her feelings for Navid who is back in town. Matt Lanter and Tristan Wilds also star.
Episode 22 : 'Tis Pity
Navid suspects that Liam and Silver hooked up so he decides to confront Liam on the red carpet of a movie premiere. Annie and Caleb (guest star Robert Hoffman) fight their attraction to one another but finally give into temptation. Meanwhile, Naomi has been hired to plan the wedding of an heiress and discovers she knows the groom a little too well, and Austin (guest star Justin Deeley) enlists his dad, Judd Ridge (guest star Billy Ray Cyrus) to be help launch Adrianna's country career.
Episode 23 : A Tale of Two Parties
A reluctant Naomi tries to sabotage the bachelorette party she has to host for Max's (guest star Josh Zuckerman) fiancee Madison (guest star Caitlin Thompson), where Madison's childhood crush, Nick Carter, makes a surprise appearance. At Max's bachelor party, Liam and Navid get into a fight over Silver and the evening comes to an end with people at both parties getting hauled to jail. Meanwhile, Ivy blames Annie and Caleb (guest star Robert Hoffman) for Diego (guest star Yani Gellman) having to go on the run. Nick Carter guest stars.
Episode 24 : Forever Hold Your Peace
Naomi shocks everyone when she announces she won't be able to oversee Max's (guest star Josh Zuckerman) wedding because she has accepted a job in New York and will be leaving immediately. Teddy (guest star Trevon Donovan) comes back to town and Dixon rushes back from touring to give his relationship with Adrianna another try, then fails to show up at their meeting spot. Meanwhile Silver feels like she has to choose between Navid and Liam and makes a life-changing decision. Gillian Ziner and Shenae Grimes also star.