ONE TREE HILL follows the story of two estranged half-brothers, Lucas Scott (Chad Michael Murray, DAWSON'S CREEK) and Nathan Scott (James Lafferty) who lead very different lives in a small North Carolina town. Series three finds the gang in their senior year--a significant turning point in any teenager's life. Dan's out for revenge, Haley fights to save her marriage, Peyton comes to terms with her birth mother, and tragedy strikes Tree Hill High. Suddenly, who wins the cheerleading tournament doesn't seem quite so important.