Welcome to Orange County, home to the rich, the beautiful and plenty of drama. When a troubled teen arrives in the affluent community, the lives of its residents are transformed forever.
Seth seeks the advice of his straight-talking boss Alex - guest star Olivia Wilde - to win back Summer. Julie determines to stay in power, even if Caleb's legal problems ruin him and the Cohens.
The second series opens with Seth and Ryan still absent from Newport, and Marissa struggling to cope with her loneliness. Even if the gang can get back together, will things ever be the same again?
The Distance: It's almost time for school to start, but Seth and Ryan still haven't returned to Newport
Series 2 Episode 1
The Way We Were: Seth and Ryan settle back into Newport life. Julie pressures Sandy to help Caleb.
Series 2 Episode 2
The New Kids on the Block: Seth seeks the advice of his boss Alex - guest star Olivia Wilde - to win back Summer
Series 2 Episode 3
The New Era: Ryan and Seth go on an awkward double date to see The Killers perform
Series 2 Episode 4
The SnO.C.: Winter comes to Newport, and the town prepares for the annual SnO.C. Ball
Series 2 Episode 5
The Chrismukkah That Almost Wasn't: Chrismukkah faces ruin when secrets emerge that will change the Cohen family forever
Series 2 Episode 6
The Family Ties: Ryan struggles with his feelings for Lindsay. Seth tries to impress Alex.
Series 2 Episode 7
The Power of Love: Lindsay and Ryan try to get their heads around their new relationship
Series 2 Episode 8
The Ex-Factor: Summer and Marissa organise a ladies' night out, leaving the guys to their own devices
Series 2 Episode 9
The Accomplice: Seth and Ryan work together to create a comic about their lives in Newport Beach
Series 2 Episode 10
The Second Chance: The tensions between Kirsten and Sandy, and Caleb and Lindsay, grow
Series 2 Episode 11
The Lonely Hearts Club: On Valentine's Day, Sandy tries to make up with Kirsten, and Seth vows to get Summer back
Series 2 Episode 12
The Father Knows Best: An impatient Kirsten pays Rebecca a visit. And questions about Lindsay's background swirl.
Series 2 Episode 13
The Rainy Day Women: As stormy weather hits Newport, old and new relationships reach a crossroads
Series 2 Episode 14
The Mallpisode: The gang have a few heart-to-hearts when they end up locked in a mall for the night
Series 2 Episode 15
The Blaze of Glory: Marissa and Alex's relationship faces trouble when Alex learns what happened at the mall
Series 2 Episode 16
The Brothers Grim: The arrival of someone from Ryan's past causes a stir in Newport Beach
Series 2 Episode 17
The Risky Business: Sandy agrees to chair the OC Charity Yard Sale, but one of the auction pieces goes missing
Series 2 Episode 18
The Rager: Marissa hosts a birthday party for Trey, but the event rapidly spins out of control
Series 2 Episode 19
The O.C. Confidential: Sandy, Seth and Ryan devise a plan to save another Atwood from being sent to jail
Series 2 Episode 20