It's Thanksgiving and Blair is upset that Cyrus, her mother's new boyfriend, has decided to ruin their holiday traditions. Lily finds herself in the middle of Rufus and Jenny, who threatens to stop talking to her father if things do not go her way. Serena continues to hide her complicated past from Aaron, but Dan ends up accidently revealing parts to him. Meanwhile, Blair and Chuck come to Nate's aid when he has to confront his father; and Eric learns of a secret that Bart is keeping from his mother.