The new extended promo for "The Vampire Diaries" season 8 episode 10 is aptly titled Nostalgia's A Bitch. Sybil is going wild with Damon under her spell, while Caroline and Bonnie discover the key to saving him.

There are seven remaining episodes to "The Vampire Diaries" season 8 until the show ends finally. The extended promo sets the series after the the Miss Mystic Falls Pageant. Comic Book Movie notes that Bonnie (Kat Graham) and Caroline (Candice King) will get into Damon's (Ian Somerhalder) mind to rescue him from Sybil's (Nathalie Kelley) infinite torture. Sybil has vowed revenge on Damon (Ian Somerhalder) by putting him in a catatonic state.

Bonnie and Caroline run into so many acquainted faces from their past while inside Damon's mind. It was a pulse-rending scene where they raced against time for the bell, as both Sybil and her sister Seline (Kristen Gutoskie) fight to control it. As they struggle to restore Damon, they come to realize that Stefan (Paul Wesley) is the only one with the key to unlocking his brother's destiny.

"The Vampire Diaries" final season is packed with more adventure, drama and high stakes than ever before. In the previous season, without Elena, our heroes restructured their world. Stefan (Paul Wesley) and Caroline (Candice King) started their long-awaited yet complicated relationship.

In the final season, Damon went on to take revenge against his mother Lily (guest star Annie Wersching). She abandoned them to care for vampire-witches and these unwise decisions caused her own death. Rayna forced Stefan to escape and leave Caroline behind and make a new start with Alaric.

Damon enlisted the help of the Armory, but the Armory's deeper agenda endangered Bonnie's life . In order to solve the crisis, Damon and Enzo get into the Armory's occult vault. According to Spoilers Guide, the triumvirate of Stefan, Caroline and Alaric will team up with Bonnie in "The Vampire Diaries" final season to search for the two most important men in her life.

"The Vampire Diaries" season 8 episode 10 was written by Brett Matthews and is directed by Kellie Cyrus. It is set to air January 27, 2017.