

Ryan Atwood, a teen from the wrong side of the tracks, moves in with a wealthy family willing to give him a chance. But Ryan's arrival disturbs the status quo of the affluent, privileged community of Newport Beach, California.
Season information provided by TMDB.

2003
27 episodes

2004
24 episodes
At the end of last season, Ryan returned to Chino to protect his pregnant ex-girlfriend from her abusive ex-boyfriend and, with the departure of his only friend in Newport Beach, Seth decided to do what he always had planned: sail off on his yacht, the Summer Breeze, and run away from Newport Beach. With Seth and Ryan gone, Kirsten and Sandy try to stay busy with a remodeling project at home, while Julie and Caleb settle into their gorgeous Newport Beach mansion. But now the summer is over, school's about to begin and Ryan and Seth are nowhere to be found.

Official trailers and clips from TMDB.

Autumn Reeser
Taylor Townsend

Mischa Barton
Marissa Cooper

Willa Holland
Kaitlin Cooper

Alan Dale
Caleb Nichol

Tate Donovan
Jimmy Cooper

Chris Carmack
Luke Ward
2005
25 episodes
Ryan, Marissa, Seth and Summer are about to begin their senior year at Harbor High. But while everyone else celebrates the last days of summer, a dark cloud hangs over the foursome. Trey, Ryan's brother, still clings to life two months after the shooting and the cops want to know who really shot him. Meanwhile, Julie Cooper and Jimmy are determined to protect Marissa at whatever cost. And while Sandy, Seth and Ryan try to fend for themselves at home, Kirsten, still recovering in her plush rehab by the sea, forms a friendship with fellow recovering alcoholic Charlotte, who like all things in the O.C. may not be everything she appears to be.