Kat Graham
Kat Graham as BonnieFacebook/The Vampire Diaries

This Friday's episode of "The Vampire Diaries" will see Damon and gang on a mission to save Bonnie, but their plan will be derailed by Rayna, who will turn the table on the Salvatore brother in the last minute.

Warning: This article contains spoilers from Friday's episode titled "Kill 'Em All"

According to the spoilers, Rayna will die towards the end of the episode, but not before making Bonnie the new vampire huntress. Also, Bonnie becomes the new badass character of the show after she seals the entire Armory and leaves Alex with whatever is in the vault.

Bonnie portrayer Kat Graham had mentioned the episode during an interview with Us Weekly, saying a lot of cool stuff is in store for her character. "There's some really intense stuff with my character this season," the actress said. "I think the biggest episodes I've ever had are 20 [airing April 29] and 21 [airing May 6]. It's pretty major for the character — huge turns, a lot of stunts and cool s--t!"

Elsewhere in the episode, fans will finally learn the story behind why Matt hates Stefan. Apparently, a few years ago, Stefan returned to Mystic Falls on the death anniversary of Liz Forbes, hoping to run into Caroline. Instead, he comes across Penny who tries to kill him. Trying to escape, Stefan runs into Matt and the police officer accidentally shoots Penny. Even though it was Matt who pulled the trigger and killed Penny, he blames Stefan for it.

The official synopsis for "Kill 'Em All," according to Wikia, reads:

With Bonnie's life at stake and an uphill battle ahead of them, Damon and Enzo lead the charge to save Bonnie before her condition worsens. Stefan reluctantly teams up with Matt for the sake of Bonnie and uncovers the truth behind Matt's anger towards him. Elsewhere, determined to help her best friend, Caroline joins Alaric on a mission and quickly realizes how much she's missed her former supernatural lifestyle. Finally, after their plan takes an unexpected turn, Damon makes a fateful decision that will forever change his relationship with Bonnie.

"The Vampire Diaries" airs Fridays on the CW.