When complications from her supernatural pregnancy leave Caroline's (Candice King) life hanging in the balance, Stefan (Paul Wesley) and Valerie (guest star Elizabeth Blackmore) take extreme measures to try and save her and the babies.
Meanwhile, after uncovering a dark secret about Damon (Ian Somerhalder), Enzo (Michael Malarkey) uses the information to force Damon into helping him track down Rayna Cruz (guest star Leslie-Anne Huff), a ruthless vampire hunter who is on the loose. However, when Damon's actions inadvertently put everyone he loves in Rayna's path, he is forced to make things right before it's too late.
