The Vampire Diaries Season 8 full movie online on FMovies. The final season of "The Vampire Diaries" begins a few months after it left off, with Damon and Enzo on an epic killing spree after being kidnapped and enslaved by the Siren Sybil. During the search to find them, Stefan, Bonnie, Caroline, and Alaric discover that the mysterious force they are up against may be more powerful than they thought and they must go to great lengths to keep the people they love safe. When they discover Sybil's motive, they must do everything in their power to prevent her from accomplishing her goal. Caroline and Stefan take a big step in their relationship, but when Stefan is forced to turn off his humanity to protect the people he loves their plans are put on hold.