When her children become the focus of the Siren's latest plan, Caroline (Candice King) takes drastic measures to ensure nothing gets in the way of keeping her family safe. In a race against the clock, Stefan (Paul Wesley) pledges to do everything he can to save the twins, while tensions between Alaric (Matt Davis) and Caroline boil over, leading them to face some harsh realities about the future of their family. Meanwhile, when Enzo (Michael Malarkey) finds himself unable to fight off Sybil's (guest star Nathalie Kelley) latest move, Stefan dives into his subconscious and along the way, sets off a chain of events that leaves him faced with a life-changing decision.