Kristin and the girls arrive with Brody and his friends in Costa Rica; the romantic setting gets them guessing who might hook up.
'The Hills' Theme Song
Stacie suggests to Kristin that Brody is her "one guy", but encourages her to stop being so careful not to flirt around him.
The girls meet up with the boys at the hotel bar, they toast to being in Costa Rica all together.
Audrina tries not to be nervous around Justin, and when Kristin flirts with the bartender, Brody upsets her by saying the wrong thing.
The local bartender, Will, takes Kristin and her friends to a local hot spot to experience the Costa Rican nightlife.
The girls dance and have fun while Brody watches Kristin enjoy an island rainstorm with Will.
Stephanie and Audrina meet Kristin and Stacie at their villa and talk about Will from the night before, and about how different Justin is now.
The boys take a break from surfing to talk about whether Justin could get back together with Audrina, and if Kristin would get back with Brody if she had the chance.
Kristin, Audrina and Stacie take an ATV to the beach to take surfing lessons and unwind without the boys.
Kristin brings Will with her when her friends gather for dinner at the romantic resort restaurant.
Brody gets irritated sitting across the table from Will, and Audrina gets uncomfortable when Justin starts talking about her "baggage".
Brody tries to play big brother to Kristin when asking about Will, but instead comes across as jealous.
Kristin leads Will into the night for a kiss, leaving Brody looking on from the bar.
The girls tease Stephanie about being in the jungle, and they all talk about how much fun Will was the night before.
Frankie and Stephanie lead everyone on a hike through the jungle to a waterfall.
Kristin and the girls swim at the foot of a waterfall while the boys jump and dive from the rocks.
While waiting for their plane, Kristin and Brody taunt each other, and Audrina shuts Justin down.
Kristin, Brody and friends leave Costa Rica to head home.