In the aftermath of Alaric (Matt Davis) and Jo's (guest star Jodi Lyn O'Keefe) powerful nuptials, things take a dramatic turn when an uninvited guest shows up, leaving Elena (Nina Dobrev) in terrible jeopardy. Despite Matt's (Zach Roerig) advice to leave town to protect herself, a defiant Bonnie (Kat Graham) takes matters into her own hands after finding herself on the receiving end of a twisted plan. As Stefan (Paul Wesley) and Caroline (Candice Accola) reach an emotional crossroad in their relationship, a reunion with Liv (guest star Penelope Mitchell) leaves Tyler (Michael Trevino) faced with a decision that could change his life forever. Meanwhile, Lily's (guest star Annie Wersching) reckless actions cause Stefan to realize the lengths to which his mother will go to reunite with her "family." Finally, after a devastating chain of events, Damon (Ian Somerhalder) is forced to make the most difficult decision of his life.