After the birth of Renesmee/Nessie, the Cullens gather other vampire clans in order to protect the child from a false allegation that puts the family in front of the Volturi. Bella awakens as a newborn vampire and must control her thirst for blood to be reunited with her daughter. As the Volturi plan to destroy Renesmee, the Cullens and their allies prepare for a battle to prove her innocence.

After Edward leaves Bella, she falls into a deep depression and begins a complicated relationship with her friend Jacob Black. As her heart heals, Bella must navigate the supernatural world of vampires and werewolves, all while trying to find her own path.

Bella Swan moves to Forks, Washington and falls in love with Edward Cullen, a vampire. Their relationship is tested when James, a tracker vampire, sets his sights on Bella. With the help of Edward's vampire family, they fight to save Bella from James and prevent her from becoming a vampire.

The wedding between Edward and Bella is interrupted when Bella discovers she is pregnant with a child that poses a threat to both the Wolf Pack and the townspeople. As Bella's health deteriorates, the Cullens and the Quileutes must join forces to protect her and the baby.

As a string of mysterious killings grips Seattle, Bella is torn between her love for vampire Edward and her friendship with werewolf Jacob. With graduation approaching, Bella must make a decision that will change her life forever.