The Vampire Diaries is adapted from the best-selling series of novels of the same name by American female writer LJ Smith. The plot of the fourth season will revolve around Elena (Nina Dobrev) who has become a vampire. The transformation reminds her of the memories that were previously erased by Damen (Ian Somerhalder), which will cause a new rift in her relationship with Stefan (Paul Wesley). What is the progress between Klaus and Caroline who possessed Tyler? Where is the real Tyler? What will Elena do after knowing the truth? How will Jeremy react to his sister becoming a vampire, and how will Elena accept this fact?