At the roommates annual summer luau party, relationships are started, rekindled, and ended. Ava learns a terrible secret about why Johnny broke up with her years ago. Susanna pretends to be involved with Jay to ward off advances from her ex boyfriend. And Nikki believes she must seduce Cameron in order to keep him interested in her and away from his ex girlfriend Amber.

Ava begins to get really worry about Bradin's relationship with his wild girlfriend Sarah when they get caught by the police for swimming near the pier at night. Bradin begins to think about breaking up with her, but he finds it harder to do than he thought it would be. Erika is caught off guard when a former boyfriend shows up, which is pretty obvious, as Nikki observes while talking to her. Meanwhile, Derrick misinterprets a friendly embrace between Susannah and Johnny on a camping trip.

Ava begins to thinks that it might be in Nikki's best interest to skip her last year of junior high and go straight to high school, but Nikki does not think that it is in her best interest. Sarah invites Bradin to run away with her to Mexico, but he soon discovers that she's actually attempting to get out of going away to a strict boarding school. Also Erika's estranged mother shows up unannounced and attempts to get Erika to leave Jay and Playa Linda to come home to live with her.

Erika moves in with Jay after she gets kicked out of her apartment. Elsewhere, Susannah and Ava need a backer for their clothing line to keep their business. Johnny and Ava rekindle old feelings after chaperoning Derrick and Martha on their date

Amber and Nikki are very shocked when Cameron shows up with a new girlfriend, Jordan. Bradin begins to practice with other guys on trying out for a surfing team with good members Zack and Lucas, but things get really complicated when he finds out Tanner is Lucas' brother. Also, Ava is interviewing people for the jobs of sales, marketing, etc., for her fashion line.