After Lucas receives his medical test results he decides to move in with Dan, straining his relationships with both Karen and Nathan. When musical guest stars Michelle Branch & Jessica Harp from the band "The Wreckers" perform at TRIC, Haley realizes her passion is to pursue her music career. Meanwhile, Brooke runs for student council president, but quickly realizes she is taking on more than she bargained for. Peyton and Jake's friendship grows stronger.