Klaus and Stefan hunt for werewolves so that Klaus can turn them into vampires in order to continue the breed of hybrids. Stefan and Klaus find out that Damon has been tracking them, so Stefan returns home and gives Damon a warning to back off by killing Andie, Damon's semi-compelled girlfriend. Meanwhile, Elena's 18th birthday arrives and Caroline holds a party for her. During the party, Jeremy sees the ghosts of Anna and Vicki. Alaric, who has stepped in as Elena and Jeremy's guardian after Jenna's death, decides to move out of their house, as he considers himself a bad role model. Caroline becomes jealous of Tyler's date Sophie at Elena's birthday party and compels her to leave. When Tyler confronts her about their issues, they kiss and go to Tyler's house. In the morning, Caroline attempts to leave the house quietly but is caught by Mrs. Lockwood, who shoots Caroline with vervain darts.