Senior year, Prom, Graduation, College visits, Old friends, New problems, And plenty of Korean popstars. Ryan's savior complex becomes a recipe for disaster. Seth and Summer's relationship hits the rocks thanks to Seth's compulsion to edit the truth. As Kirsten attempts to put her life back together, Sandy assumes leadership of the Newport Group and finds himself the heir-apparent to Caleb Nichol's legacy of scandal. Marissa spirals out of control after little sis Kaitlin - a Julie Cooper in the making - returns home to stir the pot. And speaking of Julie Cooper, she'scast out of her Palace - into the slums of the OC. No sign of senioritis here. All 25 episodes lead to the most shocking season finale yet. With humor, heart, great music and all the teen angst you could hope for (and more)