"The Vampire Diaries Universe" is a fictional world primarily based on the book series by L.J. Smith. It includes the popular television series The Vampire Diaries, which follows the lives of Elena Gilbert, Stefan Salvatore, and Damon Salvatore in the supernatural town of Mystic Falls. The show explores themes of love, friendship, and the struggle between good and evil, featuring various supernatural beings like vampires, witches, and werewolves. The universe expands further with spin-off series such as The Originals and Legacies. The Originals focuses on the first family of vampires, the Mikaelsons, while Legacies follows the next generation of supernatural beings at the Salvatore School for the Young and Gifted. Together, these series create a rich tapestry of interconnected stories and characters.