This crossover episode of "Life Unexpected" brings "One Tree Hill" characters Haley (Bethany Joy Galeotti) and Mia (Kate Voegele) to a music festival, sponsored by a Portland radio station and hosted by Ryan (Kerr Smith). At the concert, Haley and Cate (Shiri Appleby) meet and discover that they have incredibly similar pasts. It turns out that both women were somewhat nerdy, overachieving teenagers who got pregnant in high school by athletes named Nate (or Nathan). And when a secret of Cate's gets outed, Cate turns to Haley for advice.