It's been three months since Ryan left to live with the pregnant Theresa in Chino, and Seth subsequently sailed off to Portland to live with Luke and his divorced, gay fa ...

Ryan and Seth return to Newport and have their first day back at Harbor High School. Seth runs into Summer, who will not forgive him for running way and not calling her, ...

Caleb spends the night in jail until Sandy bails him out, and all of Orange Country finds out about his troubles via a front page newspaper spread. Seth realizes that he ...

Wanting to move on with their lives, Ryan sets Seth up with Lindsay. Seth sets Ryan up with Alex (Alexandra) Kelly, the punk rock teenage manger of the Bait Shop. But dur ...

Summer's relationship with Seth strains her relationship with Zach. Ryan asks Lindsay to go to the SnO.C. dance. Meanwhile, Julie finds out about Marissa and D.J.'s relat ...

Seth plans yet another Chrismukkah. This time, Ryan has drama with the ladies. If Marissa comes by, then his new interest Lindsay can't come. If Lindsay comes by Marisa c ...

Time to move on: Jimmy decides to relocate to Maui. Time to make a choice: Ryan and Lindsay wonder about their relationship status, given recent revelations. Time to bust ...

Sandy forgets his 20th wedding anniversary, creating tension with Kirsten. Not even a romantic getaway will fix this one. Sandy's chance for redemption is impaired when t ...

Alex's ex is in town, which makes Seth paranoid. A discovery makes him even more so. Meanwhile, Marissa, Summer, and Lindsay have a girls' night out, while Ryan, Seth, an ...

Hostilties heat up between Sandy and Kirsten when Sandy decides to help Max Bloom, his mentor in law school, find his daughter, Rebecca, whom was Sandy's first love. Mean ...

After hearing about Lindsay and Ryan's failed attempt at dinner with Caleb the night before, Kirsten arranges a dinner that she can supervise. But her presence makes no d ...

On Valentine's Day, Sandy and Kirsten's conflict about Rebecca continues. Ryan tries to make peace with Caleb in order to spend Valentines Day with Lindsay. Meanwhile, Se ...

As Sandy continues working on Rebecca's case, Kirsten questions how strong their feelings are for one another. Meanwhile, Seth continues his downward spiral in the afterm ...

During a rainy day in Newport, Lindsay decides to take the DNA test and makes a difficult choice regarding her life with Caleb while Ryan helps her through it. Elsewhere, ...

The gang get the chance to have a few heart-to-hearts when they're accidentally locked in a mall for the night. Marissa and Summer catch up about the state of their curre ...

Marissa recruits Ryan to help her with Harbor School's Pep Rally Bonfire. Alex accepts that her and Marissa are from two different lives and knows she is fighting a lost ...

When Ryan's brother, Trey, gets out of jail and gives Ryan a call, the Cohens give him a warm welcome. Though, Ryan knows nothing good can come from it. Zach returns from ...

Sandy reluctantly agrees with Kirsten to serve as host/auctioneer at yet another OC benefit. Meanwhile, Trey lies to Ryan to prove that he can be self-dependent when he s ...

On Trey's 21st birthday, Marissa, anxious to help Trey and Ryan forge a relationship, throws a birthday party for Trey at the Cooper-Nichol mansion that turns out to be a ...

Sandy, Ryan, and Seth devise a plan to save Trey from going to jail after he took the fall for supplying drugs at his birthday party. Kirsten and Carter, fulfilling more ...

Sandy, Seth and Ryan travel to Miami, Florida to visit Sandy's mother, the Nana, after she tells Sandy she is getting married to a much younger man. Back in Newport, Kirs ...

Seth and Zach declare war when they compete against each other for Summer's affections. Meanwhile, Marissa is still reeling from being nearly raped by Trey, and refuses t ...

Seth and Zach squabble over who should take Summer to the prom and who will meet George Lucas for dinner over the publishing of the graphic novel. Meanwhile, Sandy takes ...

Kirsten hits rock bottom after Caleb's funeral, prompting Sandy to finally take action by staging an intervention. Meanwhile, Jimmy Cooper returns to Newport and almost i ...