Damon (Ian Somerhalder) and Alaric (Matt Davis) come face to face with an old enemy after they obtain a weapon that may be able to destroy Cade. Stefan (Paul Wesley) is held captive by a surprising acquaintance and is forced to confront a dark secret from his past.
Meanwhile, Caroline (Candice King) and Matt (Zach Roerig) try to keep Stefan's violent history from destroying him. Cade (guest star Wole Parks) focuses his attention on Bonnie (Kat Graham) and digs deep into her mind.