New Moon

Edward and his family leave Forks because he believes he is endangering Bella's life. Bella falls into a deep depression, until she develops a strong friendship with Jacob Black, who she discovers can shape-shift into a wolf. Jacob and the other wolves in his tribe must protect her from Victoria, a vampire seeking to avenge the death of her mate James, by killing Bella. A misunderstanding occurs, and Edward believes Bella is dead. Edward decides to commit suicide in Volterra, Italy, but he is stopped by Bella, who is accompanied by Edward's sister, Alice. They meet with the Volturi, a powerful vampire coven, and are released only on the condition that Bella be turned into a vampire in the near future. Bella and Edward are reunited, and she and the Cullens return to Forks.