It is graduation day for Ryan, Seth, Summer, and Marissa at Harbor High School. After graduation they all go out to eat and celebrate their graduation. Ryan's mother gives him a new car as a graduation present. Marissa is going to spen...

Ryan and Volchok make a deal after a fallout at prom. Sandy is chosen as Man of the Year, but this sparks the DA to dig deeper into his involvement with the hospital problems. Marissa goes and sees Kaitlin at her boarding school and Seth vi...

Harbor School's Senior Prom brings out the best and the worst in everyone. Taylor hits a high at prom, while Summer falls flat with her surprising prom date. Seth and Anna come up with a prom plan to win Summer back. Meanwhile, Marissa...

Graduation is just weeks away and Ryan, Seth, Summer and Marissa leave Newport to attend their respective pre-frosh orientations at UC Berkeley and Brown. While dropping the boys off at the airport, Kirsten is surprised to see Theresa and h...

Ryan decides to go and invite his mother to his graduation party. Taylor and Summer work together to try and find out what Seth is hiding, but Summer ends up getting hurt. Marissa realises she is in bad company after she finds out how low V...

When college acceptance and rejection letters are received the kids must consider what path they are going to follow. Ryan and Sadie are trying to decide what they will do after high school. Taylor holds a college party and Summer and Maris...

Julie and Dr. Roberts announce their engagement and the Cooper ladies move in with Summer and her dad. Meanwhile, Marissa drifts away from the group and Summer when she seeks solace in the bad company of Volchok and his crew. Ryan tries to ...

When an old friend returns to Newport, Ryan decides to help her, which causes problems for him and Sadie. When Summer and Seth run into another rough patch Taylor tries to help them out. Sandy has to deal with more problems with the Newport...

Ryan thinks about not inviting Marissa to his 18th birthday after their falling out but Sandy tries to get him to invite a relative. After months of avoiding telling Summer and Marissa the truth Neil and Julie tell Summer and Marissa the tr...

When Ryan and Sadie go on a road trip to search for one of Johnny's relatives they end up in Ryan's old neighbourhood in Chino, which brings the two closer together. While the two are away Marissa is implicated in Johnny's de...

Kaitlin prepares herself to head back to school. Ryan has doubts about his relationship with Marissa after helping out Sadie. Kirsten and Julie make plans for a Valentine's Day party.

Sandy and Matt's hospital project hits a roadblock. Kirsten and Julie run into troubles of their own with their matchmaking business. Marissa confesses her feelings to Johnny. Summer finds out about what Seth has been doing behind her ...

Kaitlin starts going out with Johnny with the sole motive of making Marissa jealous. Seth starts getting nostalgic as he prepares for his Brown interview.

It's winter break and Kaitlin Cooper has returned home from her Montecito boarding school.

Ryan, Seth and Summer launch a campaign to get Marissa back into Harbor. With the help of Dr. Kim they get the board of trustees to hear the case. Will Marissa be permitted to return for her final semester?

Chrismukkah has returned to the Cohen house and Seth suggests to have a Bar Mitzvah to Ryan to raise money for Johnny's knee surgery after his accident but Ryan then pulls out after seeing Johnny and Marissa get too close.