Reeling from the death of her parents, 17-year-old Elena becomes interested in a handsome new student named Stefan, who's hiding a dark secret.

Elena goes to the Salvatore house to talk to Stefan, but finds Damon there instead, who reveals surprising information about Stefan's past. Vicki begins to remember the attack.

Elena invites Stefan and Bonnie to dinner, hoping that the two will bond, but the evening is disrupted by the unexpected and unwelcome arrival of Damon and Caroline.

Stefan escorts Elena to the town's Founder's Party. At the party, Damon tells Elena a story about the Salvatore family, leaving Elena with questions Stefan refuses to answer.

Stefan is hopeful of his plan to get rid of Damon, and decides to reveal parts of his past to Elena. Bonnie seeks advice from her grandmother (Jasmine Guy - A Different World).

In flashbacks, Stefan reveals to Elena the Salvatore family history, including how his rivalry with Damon began. In the present, Damon impulsively takes control of Vicki's future.

Bonnie's abilities surprise Damon. Elena asks Jeremy not to see Vicki. Matt takes Vicki to the high school Halloween dance, but the night takes a terrifying turn.

Stefen gets a surprise visit from old friend Lexi. Caroline tries to get Damon's Medallion back from Bonnie.

When Sheriff Forbes tells Damon of another attack, he offers to track down the killer, learning startling information about the town's founding families.

Lives hang in the balance as the consequences of the sacrifice ritual play out.

It's Elena's 18th birthday, and as she searches for Stefan, Damon tries to keep her from doing anything that might draw Klaus's attention.

Damon and Alaric reluctantly go along with Elena's new strategy to find Stefan, leading Damon into a dangerous fight with an unexpected enemy.

Despite all that has happened, Caroline is determined to see that Elena, Bonnie, Matt and Tyler all enjoy a traditional Senior Prank Night before the school year begins at Mystic Falls High School. However, when uninvited guests show up, it doesn't take long for the evening to take a deadly turn. Damon convinces Jeremy that he can use his new connection to the other side to help find a way to defeat Klaus. Finally, Klaus deepens his hold on Stefan and uses him for increasingly violent and dangerous purposes.

Elena meets Stefan at the high school and he tells that he is watching her following Klaus's order. Rebekah, who is staying at the Salvatore's house, is in the same class as Elena. Elena plots with Alaric and Damon to lock Stefan in the dungeon of the Salvatore house. Tyler is fascinated and reveling in his sire bond to Klaus. Vicki convinces Matt to bring her back from the dead. Anna tells to Jeremy that darkness is surrounding Vicki, and that she has made a pact with the Original Witch. Vicki hits Matt on the head and seeks out Elena as part of her agreement with the witch. Meanwhile, Damon stays with Rebekah while Elena and Alaric abduct Stefan. Katherine awakens Mikael who confesses that he does not drink human blood, he instead feeds on vampires.

Back to Katherine's early life 1490, Nadia helps her mom with a fighting plan.

Elena and Stefan start having dreams about an alternate version of their lives; The Travelers move in on Mystic Falls; Matt has a frightening encounter on the Other Side.

Sybil puts Damon in a catatonic state for revenge. Caroline and Bonnie enter Damon's mind and realize Stefan is the key to his fate. Sybil competes with her sister for control of the bell.

A wedding is quickly planned in order for Damon and Stefan to lure a dangerous enemy out into the open.

With the fate of Mystic Falls at stake, Stefan and Damon must fight their greatest enemy for one last battle.

In flashbacks, Stefan reveals to Elena the Salvatore family history, including how his rivalry with Damon began. In the present, Damon impulsively takes control of Vicki's future.

Bonnie's abilities surprise Damon. Elena asks Jeremy not to see Vicki. Matt takes Vicki to the high school Halloween dance, but the night takes a terrifying turn.

Reeling from the death of her parents, 17-year-old Elena becomes interested in a handsome new student named Stefan, who's hiding a dark secret.

A wedding is quickly planned in order for Damon and Stefan to lure a dangerous enemy out into the open.

Sybil puts Damon in a catatonic state for revenge. Caroline and Bonnie enter Damon's mind and realize Stefan is the key to his fate. Sybil competes with her sister for control of the bell.

Elena and Stefan start having dreams about an alternate version of their lives; The Travelers move in on Mystic Falls; Matt has a frightening encounter on the Other Side.

Back to Katherine's early life 1490, Nadia helps her mom with a fighting plan.

Elena meets Stefan at the high school and he tells that he is watching her following Klaus's order. Rebekah, who is staying at the Salvatore's house, is in the same class as Elena. Elena plots with Alaric and Damon to lock Stefan in the dungeon of the Salvatore house. Tyler is fascinated and reveling in his sire bond to Klaus. Vicki convinces Matt to bring her back from the dead. Anna tells to Jeremy that darkness is surrounding Vicki, and that she has made a pact with the Original Witch. Vicki hits Matt on the head and seeks out Elena as part of her agreement with the witch. Meanwhile, Damon stays with Rebekah while Elena and Alaric abduct Stefan. Katherine awakens Mikael who confesses that he does not drink human blood, he instead feeds on vampires.

Despite all that has happened, Caroline is determined to see that Elena, Bonnie, Matt and Tyler all enjoy a traditional Senior Prank Night before the school year begins at Mystic Falls High School. However, when uninvited guests show up, it doesn't take long for the evening to take a deadly turn. Damon convinces Jeremy that he can use his new connection to the other side to help find a way to defeat Klaus. Finally, Klaus deepens his hold on Stefan and uses him for increasingly violent and dangerous purposes.