High school senior Mackenzie attempts to solve the mystery of her best friend's murder in a town affected by the werewolf virus.

Bella debe escoger entre su amistad con Jacobo, un hombre lobo, y su amistad con Eduardo, un vampiro, pero cuando es acosada por una misteriosa cadena de asesinatos, los tres deben decidir si su vida personal es más importante que el bienestar de una ciudad. Bella must choose between her friendship with Jacob, a werewolf, and her relationship with Edward, a vampire, but when Seattle is ravaged by a mysterious string of killings, the three of them...

Continues the story of the human Bella and the vampire Edward whose love is threatened by their difference, a werewolf named Jacob, and other outside influences.

Now that she has made her choice between living a fully human life or joining the world of immortals to be with her beloved Edward, Bella finds her future threatened by a series of events with potentially disastrous consequences.

Alan Knightley and his son, Darkus, thirteen, investigate a very unusual canine case that suggests there may be werewolves afoot, and that the sinister organization, the Combination, may be involved.