 Sandy reluctantly agrees with Kirsten to serve as host/auctioneer at yet another OC benefit. Meanwhile, Trey lies to Ryan to prove that he can be self-dependent when he steals one auction exhibit leading Ryan and Seth on a mission to recover it before anyone finds out. Carter reinvigorates Seth and Zach s comic book dream, much to the annoyance of Summer. Also, Marissa moves in with the Cohens, unwilling to stand anymore of living with Julie or Caleb.