[SINOPSIS] New Moon

The events of New Moon begin on Bella's 18th birthday. Bella is especially upset because it is the day that she becomes older, physically, than Edward, who will always be 17. It didn't help that she also had a nightmare, where she was with who she thought to be her Grandma Marie, but who turned out to be herself. Edward came to her side in the dream and was just as young and flawless as always. Edward persuades her to come to his house on the evening of her birthday for a party thrown by his sister, Alice. Bella receives a paper cut while opening one of her gifts, drawing a single drop of blood and causing Edward's brother, Jasper, to try to attack her. Edward, in the process of defending Bella from Jasper, throws her into a table filled with crystal, which results in Bella getting a deep cut from her wrist to her elbow. Although Bella's injuries are not life-threatening, Edward later decides that she would be safer without him, his family, and his dangerous lifestyle, so he deceives Bella into thinking that he does not love her any longer and leaves Forks with his family.

Bella sinks into a deep depression for four months, until she is awoken by Charlie, her father. He threatens to send her back to live with her mother in Jacksonville because he is worried about her behavior. To appease her father, she tries to engage in normal, teenage-like behavior. She invites her friend Jessica to go to Port Angeles, Washington with her for dinner and a movie. While there, she carelessly approaches four men standing outside a bar. This results in her hearing Edward's voice inside her head, warning her to turn around. Bella soon realizes that whenever she puts herself in a dangerous situation, she can hear Edward's voice with perfect clarity. With this discovery in mind, Bella seeks out Jacob and convinces him to fix a motorcycle for her and teach her how to ride.

Jacob and Bella become friends, when suddenly Jacob refuses to answer any of her calls and asks her not to come to his house anymore. It is not until two weeks later that Bella learns what has happened to her friend: he has become a werewolf and is avoiding Bella for her own safety. She also learns that Victoria has returned to kill her, out of revenge for Edward killing Victoria's mate, James, in Twilight. Bella and Jacob reconcile, and she assists his werewolf pack in hunting down Victoria.

To hear Edward's voice again, Bella attempts cliff-diving and nearly drowns. When Alice, who has the power to see the future, sees Bella jump, she believes Bella had committed suicide and subsequently returns to Forks. Edward, isolated from his family by his own volition, is told by Rosalie, his other adopted sister, that Bella is dead. Alice finds Bella and tells her that Edward is going to Volterra to ask the Volturi to kill him, because he believes Bella to be dead. Bella and Alice quickly pursue Edward to Italy, and stop him from being killed. Afterwards they are brought to speak with the Volturi, where they make a promise to change Bella into a vampire so that they can be let free.

Back in Forks, Edward explains why he had to leave and begs her forgiveness. He tells her that he loves her and had always loved her, and promises to never leave her again. She forgives him, and they continue their relationship as if Edward never left. When Edward once again refuses to transform Bella into a vampire, she decides to let his family decide whether she should be changed and thus join their family. All except Edward and Rosalie vote affirmatively for her to be changed.

Although initially outraged by his family's decision, Edward later agrees to change her himself if she agrees to marry him first. Later, Jacob meets with Edward and Bella to remind Edward and his family of the treaty made between the Cullens and the La Push werewolves, which states that no Cullen may bite a human. Bella is thus left in a difficult position: if she does not become a vampire, the Volturi will come to kill her. However, if the Cullens do make her into a vampire, they will have broken their treaty with the La Push werewolves, which would start a war with the Cullens.