All 27 episodes from the first season of the racy US teen drama. In the pilot episode, troubled teen Ryan Atwood (Benjamin McKenzie) is taken in by the wealthy Cohen family after being arrested for car theft in his hometown of Chino, California. In 'The Model Home', Ryan decides to run away from his cushy new home, but is persuaded to stay by his new friends Seth (Adam Brody) and Marissa (Mischa Barton). 'The Gamble' sees Ryan's mother Dawn (Daphne Ashbrook) making a surprise visit to her son's new home. Newport's finest young ladies are preparing to enter society in 'The Debut'. 'The Outsider' sees Ryan taking a job at the Crab Shack diner. Marissa must choose between Ryan and Luke (Chris Carmack) in 'The Girlfriend'. In 'The Escape', Seth, Ryan, Marissa and Summer (Rachel Bilson) take an end-of-summer trip to Tijuana, Mexico. 'The Rescue' sees Ryan enrolling at his new school. School begins in 'The Heights', and Marissa finally chooses her man. 'The Perfect Couple' sees Ryan and Marissa planning their first date. In 'The Homecoming', it's Thanksgiving - and Ryan gets a call from his family back home. 'The Secret' sees Ryan and Luke making friends. In 'The Best Chrismukkah Ever', Seth is still stringing two girls along. It's New Year in 'The Countdown', and Seth finally makes his choice. In 'The Third Wheel', there's an unwelcome guest in the Cohen household. 'The Links' sees Summer getting used to being just friends with Seth and Anna (Samaire Armstrong). Summer has found herself a new boyfriend in 'The Rivals'. Relationships are looking fragile for a few couples in 'The Truth'. In 'The Heartbreak', it's Valentine's Day and Marissa confesses her true feelings to Ryan. In 'The Telenovela', Ryan and Marissa are having trouble staying just friends. 'The Goodbye Girl' sees Anna leaving Newport to return to Pittsburgh, much to Seth's dismay. In 'The L.A.', Summer and Marissa get invited to a Hollywood party. 'The Nana' sees Nana Chen (Linda Lavin) arriving in Newport for Passover with some tragic news. 'The Proposal' sees Luke becoming the victim of a tragic accident. In 'The Shower', everyone is in shock after Caleb (Alan Dale) and Julie (Melinda Clarke) announce their engagement. In 'The Strip', Seth and Ryan get into a sticky situation in Las Vegas while attending Caleb's Bachelor party. Finally, in 'The Ties That Bind', Juile and Caleb get married, while Ryan faces a difficult decision.
When Ryan Atwood, a tough, guarded, fiercely intelligent 16-year-old plunges headlong into the wealthy, privileged community of Newport Beach, he soon discovers that the ruling families of Orange County are every bit as territorial as the tough crowd with which he ran on the streets of Chino. For Sandy Cohen, the idealistic public defender who takes Ryan in; his wife Kirsten, the linchpin of O.C. society; their awkward adolescent son, Seth; and the beautiful troubled girl next door, Marissa Copper - Ryan's presence will forever change their lives.