It's a new beginning for this iconic group of friends, as they return to the Hills and reconnect for the first time in years, while facing new challenges, old rivalries and romance.

As Stephanie tries to repair her relationship with her estranged brother Spencer, Mischa faces down Perez Hilton, who bullied her in her acting heyday.

Audrina learns some shocking information about Justin Bobby that forces her to re-examine his motives. Tempers flare when Spencer and Heidi question their relationship with Brody.

Audrina confronts Justin. Brody laments the state of relations with his estranged father, Caitlyn, and with his one-time best friend, Spencer. Spencer and Heidi's relationship is put to the test.

The group heads to Vegas to see Brody's DJ performance, and Justin finds himself caught in the middle of a showdown between Audrina and Stephanie. Wildfires tear through Malibu.

Brody and Kaitlynn deal with the devastating aftermath of the Malibu fires. Audrina makes a difficult decision about Justin. Meanwhile, Heidi begins to revive her pop star career.