The twisted Naomi continues her personal quest to destroy Annie's personal and professional life by spreading a false rumor about the existence of a nude photo of Annie, which causes a further divide between Annie and Dixon, as well as Annie's parents who continue to worry about her continuing slide down a dark path. Meanwhile, Liam decides to defy his stern and semi-abusive stepfather and try out with Dixon and Teddy for a spot on the school's surfing team. Elsewhere, Ryan worries about his romance with the manipulative Jen who begins to show off her true colors to him.

Silver and Kelly continue to argue about caring for their dying mother, in which Kelly wants nothing to do with their drunk of a mother, Silver wants to spend her time caring for her. While dealing with schoolwork and caring after school for Jackie, Silver is paired with Teddy for a class project where they find they have more in common when he tells her that his mother too died from cancer. Meanwhile, Naomi continues her relationship with Richard, but continues to flirt with Jamie. Although coming clean with Sasha, Dixon realizes that he and her are in two different places in their life and decides to break up with her, but she later tells him some "life-changing news". Tensions escalate between between Debbie and Harry when she walks in on Harry and Kelly talking in his office, and Debbie's jealousy and suspicion gets the worst of her. Elsewhere, Annie and Jasper's relationship is put to the test when he attempts to convince her to steal a car while shooting a scene for his student film. Also, Liam butts heads with Ivy, the newest member of the surf team. Most of the gang attend a Halloween costume party at the Beverly Hills Beach Club where Adrianna dresses up as Marilyn Monroe to help her deal with the end of her relationship with Navid.

Naomi, Silver and Adrianna go shopping in the Palisades Mall and run into Annie on a date with Jasper. Annie further arouses the girls suspicions when she refuses to give them an explanation why she's still with Jasper despite knowing his true nature. Unknown to everyone, Jasper continues to blackmail Annie with photographic proof of her hit-and-run. But Annie eventually turns the tables on him when she gives Jasper an ultimatum by threatening to drag him down with her in which he backs down and Annie's mind is finally put at ease... so it seems. Afterwards, Naomi tries to be Ivy's friend and they try to end the awkwardness between them by going on a nature hike. But Naomi discovers Ivy's ulterior motive to embarrass Naomi which leads to them getting into a fistfight at the beach. Meanwhile, Adrianna and Gia's close friendship continues to develop when the two of them throw a pity party for themselves while Gia's former girlfriend, tries to win her back. After Dixon comes clean to both Silver and Teddy about trying to keep them apart, they both toy with the idea of trying to make a relationship work. Also, Ryan meets a free-spirited woman, named Laurel, at a bar, which soon leads to them going into Laurel's car for some quick intimacy. But it turns out to be that Laurel is Ivy's hippie mother. Elsewhere, a surprise visitor, whom is Dixon's biological mother, shows up on Harry and Debbie's doorstep.

Naomi is taken hostage in her own home by an out-of-control Mr. Cannon who also lures Silver into the situation. Annie and Dixon's cousin Emily from Kansas comes to town for an extended visit, but Emily immediately gets on Annie's nerves. Dixon confronts Teddy about his kiss with Ian and promises to keep his secret. During surf practice, Ivy takes a nasty spill that makes her question her ability to compete in the surf competition. Adrianna's world continues to crumble when she appears on a talk show to tell her side of the story, and she is blindsided by a surprise guest. Given Adrianna's disastrous situation, Navid and Silver continue to keep their hook-ups a secret.