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High school seems like a distant memory to...

High school seems like a distant memory to the young graduates of Harbor School--in the affluent ocean-side community of Newport Beach in Orange County, California--particularly because they have been thrust into adulthood after the death of their beloved friend Marissa Cooper.The Cohens struggle to keep their ward, Ryan Atwood (series star BEN McKENZIE), focused on the future, fighting the forces that threaten to pull him back into his old life. Sandy Cohen (series star PETER GALLAGHER) return

Ryan travels to Mexico--with a stubborn Seth...

Ryan travels to Mexico--with a stubborn Seth in tow--to put an end to his turmoil in the only way he knows how, but he comes up empty in quest for revenge. Meanwhile, Seth meets some new friends in Mexico, including a Marine (STEVE-O - "Jackass"), who help him find what he is looking for. Harbor School's new female dean of discipline, Dean Torres (TIA CARRERE - "True Lies," "Relic Hunter"), forces Kaitlin and Julie to work together on Harbor's clothing drive. And the Cohens ostracize Julie wh

It's Thanksgiving morning at the Cohen house,...

It's Thanksgiving morning at the Cohen house, and the family is still dealing with what happened in Mexico. Sandy makes a deal to help Volchok (recurring guest star CAM GIGANDET) but lets Ryan intervene and finally settle the score. Meanwhile, as Summer packs for a trip home to visit her family and Seth for the holiday, she wonders if she can deal with Newport anymore. And unable to cope with either Kaitlin or Dr. Roberts, Julie spends most of Thanksgiving alone.Thanksgiving Episode

When Summer tries to become the gossip-loving...

When Summer tries to become the gossip-loving girl she once was, she realizes that Brown may have changed her forever. Fortunately, Seth continues to be supportive of the new Summer through all of her endeavors. Similarly, Ryan empathizes with Taylor and surprisingly helps her out of a bind. Meanwhile, Julie and Kaitlin attempt to stay out of trouble, but neither can resist temptation.

Summer and Che (recurring guest star CHRIS...

Summer and Che (recurring guest star CHRIS PRATT) take their activism to a new level, resulting in more freedom than they expected. Meanwhile, after Julie flirts with a hot tennis instructor whom Kaitlin likes, the younger Cooper gets her revenge at a charity party. But later, Kaitlin helps save Julie and Kirsten's dating service. Attracted to Ryan, Taylor tries to cure his insomnia with her own therapeutic plan. When all of her schemes fail, she turns to Kaitlin for advice on how to get her

When Seth visits Summer at Brown, he finds...

When Seth visits Summer at Brown, he finds an empty dorm room. Meanwhile, Sandy and Kirsten take advantage of an opportunity to bond with Ryan, who is in a Taylor-induced haze. Kaitlin meets the mean girl of Harbor School and tries to best her by throwing a huge party at the Roberts house. Julie learns that Newmatch is more than just a dating service. And the truth about Che (recurring guest star CHRIS PRATT) comes out.

It's time for another Chrismukkah in Orange...

It's time for another Chrismukkah in Orange County. After Ryan and Taylor have an accident while hanging holiday lights, they realize that everything is not as it seems, and they must do whatever it takes to make things right again. Former series star TATE DONOVAN guest stars as Jimmy Cooper.

As the new year approaches, Ryan plans a...

As the new year approaches, Ryan plans a special surprise road trip for Taylor and himself. But when Summer confronts Seth about not making any plans, Ryan's romantic getaway for two is spoiled. Later, Summer's future rests in the hands of a shady character that the gang meets on the way to Las Vegas. Meanwhile, Julie's accounting practices come under some unwanted scrutiny.(New Year's Eve episode)

Newly engaged Seth and Summer both panic...

Newly engaged Seth and Summer both panic about the prospect of being married, but neither will break it off, despite the advice of their friends. Instead, they begin a complicated game of one-upmanship that almost leads them to Las Vegas for a wedding. Meanwhile, when Ryan's estranged biological father, Frank (recurring guest star KEVIN SORBO), who has been in prison for years, tries to reconcile with Ryan, Sandy remains dubious--and his instincts about Frank may just be correct. Also, rebell

Taylor's ex-husband, Henri-Michel (HENRI...

Taylor's ex-husband, Henri-Michel (HENRI LUBATTI), gets a little too close to home while promoting his erotic memoirs. After Henri-Michel tells Ryan about Taylor's exciting life in France, Ryan questions his own relationship with Taylor. Meanwhile, Seth visits Dr. Roberts (recurring guest star MICHAEL NOURI) in Seattle to ask for permission to marry Summer, who gets a vision of her future. And Kaitlin realizes that she likes Will (recurring guest star CHRIS BROWN), but she is concerned he thi

Che (recurring guest star CHRIS PRATT) and...

Che (recurring guest star CHRIS PRATT) and Seth take a trip to a forest, where Che has a dream and discovers that his spirit might be in love with someone unexpected. Afterwards, Seth and Summer finally speak for the first time since she rejected his marriage proposal. Meanwhile, Taylor decides that she can no longer associate with Ryan. Julie works her way back into Kirsten's life in the only way she knows how. And Kaitlin shuts out Will (recurring guest star CHRIS BROWN).

As the Cohens prepare for Kirsten's 40th...

As the Cohens prepare for Kirsten's 40th birthday party, Kirsten gets some news that will change her life forever. Meanwhile, Julie is having a secret love affair--and Kaitlin is doing everything she can to stop it. While Ryan acts as if he doesn't miss Taylor, she visits a therapist who gives her some rules to live by. After Seth and Che's (recurring guest star CHRIS PRATT) plan to save Newport's groundhog goes awry, Che finally realizes that Seth is not his soul mate. And Sandy and Kirsten

As Valentine's Day approaches, Ryan worries...

As Valentine's Day approaches, Ryan worries that the pressure of the holiday will ruin his relationship with Taylor. Meanwhile, revelations from their pasts--along with a psychic's dire predictions--cause Summer and Seth to question whether or not they are destined to be together. Kirsten reminisces about her own history and decides to share a long-held secret with Sandy. Ryan begins to tentatively reconcile with his father, Frank (recurring guest star KEVIN SORBO), thanks to Taylor's meddlin

Taylor eagerly prepares for her first real...

Taylor eagerly prepares for her first real birthday celebration, but she frets over the fact that Ryan has still not told her he loves her. Even more concerning is the fact that she has secretly applied to and been accepted at Berkeley, the same school Ryan is going to attend. Summer helps Taylor come up with a plan to help Ryan express his feelings. Meanwhile, Kaitlin misbehaves outrageously in reaction to Julie dating Frank (recurring guest star KEVIN SORBO)--but Julie finds out there's mor

In the aftermath of a major earthquake that...

In the aftermath of a major earthquake that cuts off power and communication between the Cohens and their loved ones, Seth must take over Ryan's role as the protector when Ryan is injured and the boys are stranded on a deserted road. Summer and Taylor worry about their missing boyfriends while searching for Summer's escaped pet rabbit--and the quake leads to an unexpected reunion for Taylor. Trapped in a ruined ice cream shop, the scared Julie and Kaitlin spend the time bonding and dealing wit

In the emotional series finale of "The O.C.,"...

In the emotional series finale of "The O.C.," Ryan, the Cohens, the Coopers and their friends build new lives, resolve lingering issues, face major decisions and undergo shocking personal transformations. No matter what happens or where they go, the members of this unique extended family all know that they will always have one another to turn to.

The gala at the Newport Country Club is under...

The gala at the Newport Country Club is under attack from a demonic water polo player and the Atomic kids are called in to defeat him.

While patrolling downtown Newport on her...

While patrolling downtown Newport on her invisible Vespa, Lil' Miss Vixen learns of a shoe sale a few blocks away. But before she can buy anything, Vixen needs to catch the mugger who attacked a customer outside the store.

Cosmo Lass has to drink from her magic flask...

Cosmo Lass has to drink from her magic flask to use her powers. And on this particular evening there is much evil afoot. With each successive new villain she encounters, Cosmo Lass needs another drink. This makes her progressively more drunk and less effective as a crimefighter.

Punky Spitfire is a new superhero looking...

Punky Spitfire is a new superhero looking to join the Atomic kids. The Ironist welcomes Punky to their headquarters, but a catfight breaks out when Lil' Miss Vixen sees the Ironist being chummy with Punky.

Kid Chino is constantly pestered by The Ironist...

Kid Chino is constantly pestered by The Ironist as he tries to cope with a number of urgent calamities. Every possible means of communication is utilized to interrupt Chino while he's busy trying to save the world.

The Atomic kids are fighting a losing battle...

The Atomic kids are fighting a losing battle with a giant robot when a hero called the Mentalist arrives on the scene and uses his mental powers to blast the menacing machine. Invited to the Mentalist's swanky penthouse headquarters, the gang learns that this hero has ulterior motives for saving them.

The Atomic kids need to save their comrade...

The Atomic kids need to save their comrade All-American Boy, who has been captured by the villainess Mistress Widow. While the gang scuffles with the Arachnids (Mistress Widow's beefcake henchmen), Mistress Widow escapes with Cosmo Lass's magic flask. But for what purpose?

The Ironist and Kid Chino (joined by Sandy,...

The Ironist and Kid Chino (joined by Sandy, aka the Litigator) arrive at the shore for some much-needed rest and relaxation. But when they arrive, they find that the beach has been closed by the newly back-from-the-dead Caleb Nichols (aka The Industrialist). And the fate of the beach hinges on a surfing competition.

When an alluring bartender named Alex invites...

When an alluring bartender named Alex invites the Ironist back to her motel room, she transforms into the villainess Battle Axe. Can the rest of the team find them in time to save the Ironist from certain doom?

Kid Chino is being framed for crimes against...

Kid Chino is being framed for crimes against the elderly that were really committed by his evil brother, Trey. Chino and the Ironist must disguise themselves as old ladies to try to catch Trey in the act.

A jilted Johnny Harper (aka Johnny Tears)...

A jilted Johnny Harper (aka Johnny Tears) is on a hysterical rampage, his sulfuric acid tears leaving a wake of destruction behind him, because Cosmo Lass won't go out with him. It's up to the Atomic kids to stop him.

Villain Blinding Abs possesses the ability...

Villain Blinding Abs possesses the ability to mesmerize all women. Can Kid Chino and the Ironist defeat Cosmo Lass and Lil' Miss Vixen in order to bring him to justice?

Taylor (aka Type A) offers her skills as...

Taylor (aka Type A) offers her skills as PR manager to the team. But soon after Taylor takes the job, her micromanagement begins to drive the team members crazy. They decide to fire her ... if they could only figure out a way to do it.

The Industrialist has assembled Newports...

The Industrialist has assembled Newports greatest villains in an attempt to defeat the Atomic kids once and for all, setting up an epic battle between all of our heroes and villains.

Marissa meets Ryan for the first time, sparks...

Marissa meets Ryan for the first time, sparks immediately fly.

Seth puts his foot in his mouth while he...

Seth puts his foot in his mouth while he and Ryan bond playing video games.

After Seth embarrasses him at a party, Ryan...

After Seth embarrasses him at a party, Ryan saves Seth from getting beat up.

Ryan has a run-in with Marissa's boyfriend...

Ryan has a run-in with Marissa's boyfriend when he shows up to a cotillion with her.

Seth and Summer's argument leads to the gang...

Seth and Summer's argument leads to the gang running off the road and staying in a grungy motel til the car is fixed.

Ryan rescues Marissa who runs off into a...

Ryan rescues Marissa who runs off into a strange town after learning the truth about her boyfriend.

Marissa and Ryan get stuck on top of a ferris...

Marissa and Ryan get stuck on top of a ferris wheel which leads them to their first real kiss.

Rooney performs on The O.C.

Rooney performs on The O.C.

Oliver confesses his intentions with Marissa...

Oliver confesses his intentions with Marissa to Ryan which leads them to a fist fight that Marissa walks in on.

Seth makes a fool of himself to prove his...

Seth makes a fool of himself to prove his affections for Summer on Valentine's Day.

Luke breaks up with Julie; and when he talks...

Luke breaks up with Julie; and when he talks to Ryan about it, Marissa overhears.

Jem performs on The O.C.

Jem performs on The O.C.

Summer and Marissa bond by the pool while...

Summer and Marissa bond by the pool while enjoying ice cold cocktails

Marissa finally lets her mother know what...

Marissa finally lets her mother know what is on her mind after a summer of giving her the silent treatment.

Ryan makes a date with Marissa to catch up...

Ryan makes a date with Marissa to catch up after school; Summer gives Seth the brush off.

After finding out about Marissa's affair,...

After finding out about Marissa's affair, Ryan tells her he would rather be friends.

Seth makes a fool of himself and puts himself...

Seth makes a fool of himself and puts himself in danger to prove his love for Summer at the carnival.

The Walkmen perform on The O.C.

The Walkmen perform on The O.C.

The Killers perform on The O.C.

The Killers perform on The O.C.

Modest Mouse performs on The O.C.

Modest Mouse performs on The O.C.

The Thrills perform on The O.C.

The Thrills perform on The O.C.

Rachael Yamagata performs on The O.C.

Rachael Yamagata performs on The O.C.

In the midst of a storm, Marissa tells Alex...

In the midst of a storm, Marissa tells Alex that she is serious about her, and Summer rushes to find Seth.

Death Cab for Cutie performs on The O.C.

Death Cab for Cutie performs on The O.C.

When Seth ends up on a Spring Break TV show,...

When Seth ends up on a Spring Break TV show, his health, and his relationship with summer, are put in danger.

Things turn ugly when Trey misinterprets...

Things turn ugly when Trey misinterprets Marissa's kindness.

T.I. performs on The O.C.

T.I. performs on The O.C.

Caleb has a heart attack, while across town,...

Caleb has a heart attack, while across town, Sandy confronts Kristen about her drinking problem.

Ryan confronts his brother when he about...

Ryan confronts his brother when he about Trey's attempted assult on Marissa

Marissa and Summer face off against Taylor...

Marissa and Summer face off against Taylor Townsend when she tries to take over the spring carnival.

When a friend at her new school tries to...

When a friend at her new school tries to comfort Marissa, Ryan overreacts.

The Subways perform on The O.C.

The Subways perform on The O.C.

Just as Seth realizes that things are going...

Just as Seth realizes that things are going to well, Marissa's little sister shows up at the door.

Kaitlin gets ready for her party, and Seth...

Kaitlin gets ready for her party, and Seth tries to hide his pot use from Ryan.

When Johnny gets drunk and climbs up a cliff,...

When Johnny gets drunk and climbs up a cliff, Ryan tries to talk him down.

Tom Vek performs on The O.C.

Tom Vek performs on The O.C.

Sadie gives Ryan a birthday gift, and something...

Sadie gives Ryan a birthday gift, and something to think about.

Marissa wakes up after a night with Vochek,...

Marissa wakes up after a night with Vochek, and a stoned Seth forgets to invite Summer to dinner.

After Seth doesn't get into Brown, Seth tries...

After Seth doesn't get into Brown, Seth tries to break if off with Summer rather than have her jeopardize her future for him.

When Ryan shows up at Volchok's looking for...

When Ryan shows up at Volchok's looking for the stolen money, Volchok tries to provoke a fight.

Volchock tries to force Ryan and Marissa's...

Volchock tries to force Ryan and Marissa's car off the road.

Taylor tries to explain to Summer why she...

Taylor tries to explain to Summer why she is sleeping in Summer's bed.

Taylor is going home, but before she leaves...

Taylor is going home, but before she leaves she has some advice for Summer about Seth.

After hunting him for months, Ryan gets a...

After hunting him for months, Ryan gets a chance to finally confront Volchok.

Che and Summer attempt to free a group of...

Che and Summer attempt to free a group of the school's lab bunnies.

Ryan's fantasy about Taylor might just ruin...

Ryan's fantasy about Taylor might just ruin breakfast.

Seth tries to track down Che for a little...

Seth tries to track down Che for a little revenge, while Kaitlin gets revenge of her own by throwing a party.

At the kegger, Ryan tries to find Taylor,...

At the kegger, Ryan tries to find Taylor, Seth finally finds Che, and Kaitlin's rival admits her defeat.

Seth proposes to Summer... before they find...

Seth proposes to Summer... before they find out the results of the pregnancy test.

Taylor tells Summer that she's lost her way...

Taylor tells Summer that she's lost her way , and they discover that Panakes has given birth to bunnies.

Seth, Summer, Ryan, andTaylor all say goodbye...

Seth, Summer, Ryan, andTaylor all say goodbye to each other.