Ryan Atwood is a troubled, 16-year-old kid living in the rough, crime-ridden neighborhood of Chino located in San Bernadino, California, who gets thrown out of his own ho ...

When his mother disappears and faced with the prospect of life in a group home, Ryan decides to run away from Newport, but Seth and Marissa convince him to stay and hide ...

Ryan has a difficult stay in a Juvenile Hall prison for the arson charge. Seth makes Kirsten aware of his anger over Ryan's situation, and Kirsten makes a compromise to b ...

During rehearsals for Newport Beach's annual Cotillion Ball, Ryan continues to pursue Marissa and asks her to be his dancing partner, while a continuing jealous Luke trie ...

Ryan takes a job at the Crab Shack diner where a co-worker, named Donnie, might mean bad news for the Newport kids when he takes Ryan and Seth out to party queen Holly Fi ...

Kirsten's uptight father, Caleb Nichol, comes for a visit along with his new girlfriend, Gabrielle, a 24-year-old model. Caleb does not hesitate to speak his mind and imm ...

Ryan, Seth, Marissa and Summer plan an end-of-summer trip down to Tijuana, Mexico (aka: the TJ). Luke wants to tag along with them to try to get back together with Mariss ...

While Marissa is in a hospital in Newport recovering from her near-fatal drug overdose in Mexico, Julie unfairly blames Ryan for her condition and forbids him from seeing ...

At the opening day of the new school year, Ryan doesn't feel like he fits in at his new school of Harbor High, and Luke doesn't make the situation any better when he and ...

Having chose Ryan over Luke, Marissa wants to make plans for their first romantic date together, while Ryan does not know how to behave for his first date with Marissa. S ...

Thanksgiving dinner at the Cohens descends into bedlam when unexpected guests arrive. Meanwhile, Ryan returns to his hometown when his brother calls on him for a favor, M ...

Ryan learns more about Luke when they're paired for a school history project which is that Luke isn't the macho tough guy he puts out to his friends, but he is quite a ni ...

Ryan is officially introduced to the bi-religious holiday of 'Chrismukkah', thanks to Seth who has set this up for his parents; the Catholic Kristin and the Jewish Sandy. ...

It's New Year's Eve- Ryan may have worrying competition in Oliver and fears for the future of his relationship with Marissa. Kirsten's sister returns to Newport to stir u ...

Hailey discovers that she isn't welcome into the Cohen household as much as she thought due to her continuing irresponsible and brash lifestyle and personality leading to ...

Oliver plans a new trip for the group by inviting them to Palm Springs for the weekend to play golf and travel around. But things don't go well for everyone, except for O ...

Ryan continues to become suspicious of Oliver when he suddenly transfers to Harbor High and begins making plans of his own with Marissa. But Ryan's attempts to try to exp ...

Ryan finds himself truly out in the cold when he's suspended from school, shunned by Marissa, and even scrutinized by the Cohens, all of whom refuse to believe Ryan's cla ...

On Valentine's Day, everyone is preparing for the Valentine's singles benefit dance. Luke has a new crush: that being Marissa's mother Julie. Meanwhile, Sandy gives Seth ...

Ryan and Marissa begins their lives as just friends in the aftermath of everything that has happened. But they soon find out that it is not as easy as it looks. Things ta ...

As Ryan and Theresa's relationship deepens off of a bold decision, the return of Theresa's ex-fiancé lands Ryan in (cold) water. Anna announces she is leaving Newport, c ...

When Marissa and Summer run into Grady Bridges, the star of Summer's favorite TV series The Valley, he invites them and their friends to a party in Los Angeles and they a ...

Sandy's overbearing and obnoxious mother, Sofia the Nana Cohen, arrives in Newport Beach to celebrate Passover, but she also brings not only her unattainable attitude, bu ...

On the opening night of The Lighthouse, Jimmy and Sandy discover that their liquor licence has been denied. Sandy must then decide whether to drop Jimmy and get the licen ...

Theresa reaches out to Sandy in a time of crisis, but asks him not to involve Ryan. When he finds out nonetheless, Sandy fears that he might make an impulsive decision an ...

Sandy and Jimmy, along with Ryan and Seth, set out to Las Vegas for Caleb's bachelor party. But the Cohen men soon learn that Caleb has double-crossed them over financing ...

Summer is near and that means sun, surf and rejuvenation. Or to Ryan, Seth and Marissa, it may mean none of the above as each faces a critical crossroad. Just the same, N ...