TROUBLE AT THE SWIMMING HOLE — In an attempt to bring some fun back into their lives, Elena (Nina Dobrev) persuades Caroline (Candice Accola) to meet her at the swimming hole where she plans to introduce her to Liam (guest star Marco James). Tyler (Michael Trevino), still working on controlling his anger issues, asks Liv (guest star Penelope Mitchell) for a favor and is surprised when she makes an unexpected confession. Stefan (Paul Wesley) arrives back in Mystic Falls looking for Enzo (Michael Malarkey) and is caught off guard when he notices a strange change in Elena. Meanwhile, at the lake, Enzo’s actions cause Matt (Zach Roerig) to make a startling revelation, and Jeremy makes a discovery about the anti-magic spell that could potentially put Elena’s life in danger. Elsewhere, Damon (Ian Somerhalder) and Bonnie (Kat Graham) stumble upon clues that lead them to believe they’re not alone. Michael Allowitz directed the episode written by Brian Young (#603).
— The Vampire Diaries 6x03 “Welcome to Paradise” Synopsis