Ryan and Marissa decide to start over as friends, but it proves to be a hard task when Ryan begins to spend more time with Theresa. Privately, Seth and Summer's relationship is going good, but in public, Summer hides the fact that she's with Seth. Seeing this, Seth decides he has to teach Summer a lesson. Meanwhile, Jimmy begins to be suspicious of Julie and Luke; Ryan learns why Theresa is in Newport; and Sandy finds himself involved in another mess Caleb created.
Season 1 Episode 20 of The O.C. resulted in a 0.00 rating in the 18-49 demographic.
The O.C. - also known as Orange County, California - is an idyllic paradise, a wealthy, harbour-front community where everything and everyone appears to be perfect. But beneath the surface is a world of shifting loyalties and identities, of kids living secret lives hidden from their parents, and of parents living secret lives hidden from their children. 'The O.C'. tells the story of the Cohen, Cooper, and Nichol families, and Ryan Atwood, a troubled teen from the wrong side of the tracks, who is thrust into this world, and who will forever change the lives of the residents of The O.C.