Heidi's homecoming is ruined when her mother disapproves of her plastic surgery. Kristin and the girls head to Miami for Super Bowl weekend, but the trip goes sour when her hard partying starts to worry Audrina, Lo and Stephanie.

When rumors start spreading about Kristin's partying, the blame falls on Stephanie. Audrina starts dating a new guy, but doesn't stop Brody from pursuing her. Spencer gets upset when he runs into Stephanie at Kristin's party.

Heidi throws a party for her neighbor, but it's overshadowed when Spencer gets angry with Holly. Kristin urges Audrina to commit to Ryan, then moves in to get closer to Brody.

Heidi and Spencer's behavior cause their friends and family to make a difficult choice. Kristin and Brody hook up but agree to stay single. Ryan disappoints Audrina when he doesn't show for a night out.

Brody puts his friendship with Kristin on the line when he starts seeing another girl. Lo sets Stephanie up on a double date. Ryan gives Audrina's friends another chance.

Kristin has a hard time moving on from Brody. Audrina bumps in to Justin and starts to have doubts about her relationship with Ryan. Lo befriends Brody's new girlfriend.

Brody's new love interest makes an enemy of Kristin when she brings an old rival of Kristin's to a party. Ryan comes back from tour, but Audrina doesn't tell him that she saw Justin while he was away.

Audrina's relationship with Ryan is put to the test when he meets Justin for the first time. Brody sides with Kristin when Allie picks a fight with her. Stephanie has a disappointing second date.

Just as Audrina ends things with Ryan, Justin surprises her on her birthday. McKaela's friend Allie stirs up more trouble with Kristin. Brody gives Justin a piece of his mind.

On a group surf trip to Costa Rica, Kristin makes Brody jealous by hooking up with a local bartender, Audrina fights her attraction to Justin, and Stephanie finds herself at odds with the jungle environment.

Kristin has a heart-to-heart with Brody, she wants to give their relationship another shot. Heidi's mother comes to LA, hoping to reconcile with her. Lo and her boyfriend celebrate their anniversary.

Kristin will have to decide if she's going to make a major change in her life, which may force Brody to make a decision about their relationship. Audrina chooses a new, independent life without Justin, but will that be the right choice? Lo weighs whether or not to take the next step with her boyfriend, and Stephanie, for the first time, believes that she's found true happiness. Written by MTV Publicity