Bella Swan (Kristen Stewart) once again finds herself surrounded by danger as Seattle is ravaged by a string of mysterious killings and a malicious vampire continues her quest for revenge. In the midst of it all, she is forced to choose between her love for Edward Cullen (Robert Pattinson) and her friendship with Jacob Black (Taylor Lautner)—knowing that her decision has the potential to ignite the ageless struggle between vampire and werewolf. With her graduation quickly approaching, Bella is confronted with the most important decision of her life.
While most of her high school friends are receiving college acceptances and sending graduation announcements, Bella is making a decision so she can be with her love Edward always. But, she is struggling with Edward's compromise (that she marry him before he agrees to be the one to change her into a vampire) and the consequences that these choices will bring to herself, her family, and her friends.
Meanwhile… a war is coming. By playing with the blind spots in the Cullen Family's mystical gifts, an unexplained force has created a Newborn Army—made up of the newly turned vampires whose strength, viciousness, and uncontrollable blood-lust is at its greatest in the first months of supernatural life. Are they a tool of Victoria (Bryce Dallas Howard) in her singleminded pursuit of vengeance, or of the all-powerful Volturi, making sure that Bella follows through on her intention to become immortal?
As the Newborn Army, led by the pawn Riley (Xavier Samuel), makes its way towards Forks and the Quileute lands, the Cullens and Wolf Pack must choose to put aside their instinctual conflict and form an alliance to protect Bella and their community from a larger threat. As they prepare for battle, Bella learns more about the secret history of the Quileute tribe, the growing Wolf Pack, and the origins of Jasper and Rosalie. This knowledge will help her understand the bonds formed by the wolves, recognize her love for Jacob Black, and contribute to the protection of those she loves.