Damon's plan causes a huge explosion in Mystic Falls, and everyone is caught up in the confusion, leaving a trail of heroism, sacrifice, relief and despair.

Katherine recalls the traumatic night in 1490 when she gave birth to a daughter who was immediately taken from her. Meanwhile, Nadia creates a frightening plan to protect her mother; and Caroline indulges in some scandalous behavior.

Nadia recalls her centuries-long search for her mother. Stefan, Caroline and Matt come up with a desperate plan to save Elena's life. Damon baits Tyler into an ugly confrontation and seeks revenge against Dr. Wes. Bonnie learns a terrifying secret that threatens the lives of all her friends.

Stefan and Elena become stranded in a remote location, after escaping from Markos, and he gets philosophical about her relationship with Damon. Damon sets a trap for Markos. Bonnie admits that she's been keeping the truth about the Other Side from everyone. Caroline witnesses an unthinkable act of violence by one of the Travelers.

As the fifth season opens, Elena, after a passionate summer with Damon, heads to college nearby with Caroline as her roommate. Plus, a terrifying appearance by Silas.

Elena and Katherine both dream that Stefan is in danger and convince Damon to help them find him. But their plans are thwarted by a mysterious woman who seems to know everything about Stefan's past and Damon's disturbing future.

Damon and Elena try to help Stefan through a confusing time, which ends up taking Elena on an emotional journey. Caroline makes an effort to know Jesse better.

Caroline offers Stefan an unusual form of therapy. Meanwhile, Damon tells Elena about a terrible ordeal in his past that he has kept secret for decades, and she shares with him some disturbing information she recently learned about her family.

Dr. Wes gives Katherine some disturbing news. Jeremy and Bonnie share a glimmer of hope after talking with Amara. Silas fails to keep a promise which causes Damon to turn to Tessa for help with his new plan. Stefan makes a heartbreaking confession to Damon and Elena.

Silas announces his new goal to Damon and Elena. Tessa tells Stefan about her next move. Katherine discovers an unexpected consequence of being human and realises she needs a new place to stay. Bonnie is touched by Jeremy's determination to stand by her. Damon is stunned when he learns the secret to Tessa's plan.

Bonnie has an unsettling encounter with Luke, and learns more about his family history. The Travelers' leader, Markos, arrives in Mystic Falls.

A fellow Whitmore student named Jesse gives Elena some intriguing information about Professor Wes Maxfield. Damon asks for help finding Stefan.

Elena meets a sad and secretive student on campus. Elena and Damon attend the Whitmore Historical Ball dressed as Anne Boleyn and Henry VIII. While there, Elena receives a disturbing message from Dr. Maxfield. Nadia reveals her surprising history to Katherine;. Silas demands that Damon commit an unthinkable act.

Damon is forced to deal with a part of his past he thought was gone forever when Dr. Wes unleashes a secret weapon to stop him from rescuing Elena. Elena learns about the dark history of Whitmore College. Katherine turns to Matt for help.

Damon tries to get back together with Elena, however, Katherine has a plan and attempts to take Elena's body permanently. Tyler is upset with Caroline and Matt is used by Katherine. Enzo finds Damon and they decide to become a team again.

Damon's behavior escalates from destructive to deadly. Stefan begins to regret their last conversation and tries to track Damon down and intervene. Dr. Wes enlists the Travelers to set a trap that will test Damon's friendship with Enzo; and a talk between Caroline and Stefan leads to a horrifying realization.

Stefan and Elena experience unsettling dreams of the life they might have had together. Bonnie has a disturbing encounter with Grams. Enzo searches for a woman he loved decades ago. Bonnie learns that Jeremy is working with Liv. Matt has a terrifying encounter with inhabitants of the Other Side.

Enzo holds Elena, Stefan and Bonnie hostage to uncover the truth about the love of his life. Markos performs a ritual to undo witch's magic.

Elena and Caroline plan a big party at school, but their plans are interrupted when Jesse suddenly needs Caroline's help. Meanwhile, Damon makes a terrifying discovery about a secret society.

Caroline convinces Elena and Bonnie to attend Whitmore College's Bitter Ball for broken-hearted students. Bonnie meets a fellow student who appears to be dabbling in witchcraft. Tyler worries about Matt's relationship with Nadia. Damon and Enzo resort to violence to convince Bonnie and Jeremy to help them get revenge, but their plan takes a horrifying turn.

Damon tries to find the right way to make a disturbing confession to Elena. Caroline discovers a scary secret in Dr. Wes' files. Enzo claims to have a solution everyone is searching for. Sloan reveals new information on the importance of doppelgangers.

Damon and Caroline suspect Stefan and Elena of keeping a secret while they hide from the travelers, unaware of the dead man out for revenge. Meanwhile Matt, Jeremy and Bonnie help Tyler get rid of Julian.