One albero collina commenced on September 23, 2003. The first season finale aired on May 11, 2004.

Tree collina is a small town in North Carolina, home to the famous High School pallacanestro, basket team "The albero collina Ravens" and two half-brothers Lucas Scott (played da Chad Michael Murray) and Nathan Scott (played da James Lafferty). The two brothers have grown up in the same town, but have had little o no contact with each other due to the influence of their mutual father, Dan Scott (Paul Johansson).

Dan dated Lucas' mother Karen Roe (Moira Kelly) in High School but left her and his unborn child (Lucas) behind...