Haley's birthday dawns and it appears to her that everyone has forgotten including Nathan who is stuck with Clay outside of Atlanta. It's also the night of 80's themed high-school reunion with the band Cheap Trick playing. Quinn gets into an altercation with one of Clay's former loves, Kylie. Julian and Brooke take the first step to getting their relationship back on track. Jamie decides to try "Home Alone" for himself with near disastrous consequences.