After the mauled body of a girl shows up on the outskirts of Bear Valley in Upstate New York, Elena Michaels, the world's only female werewolf, is forced to choose between her new "human" life in Toronto with new love, Philip (Paul Greene) and her previous life with The Pack, at Stonehaven. Even though it's been a year since she abandoned her life among the werewolves, Elena still feels the sting of having forsaken her old world, while trying to build a new and "normal" life.

At Stonehaven, Elena tracks the killer Mutt, while avoiding the advances of Clay Danvers, her former lover. Haunted by her own past as a killer, Elena is desperate to get back to her human life, but is delayed when a second body is discovered, this time on Stonehaven property.

Tension grows between the Pack and angry locals when another victim is discovered. Meanwhile, old chemistry resurfaces as Elena and Clay work together to track the killer Mutt to a warehouse rave.

While tensions grow between Elena and Clay, Jeremy sends the pair to track a new Mutt threat. Their investigation reveals that this Mutt threat may be less random than they first thought.

As Elena struggles to defend Clay against suspicions of murder, old memories of their past are stirred up. Former Pack member Daniel Santos arrives at Stonehaven with information about the Mutt uprising.

Back in Toronto, Elena's commitment to Philip is tested and her life interrupted when Santos makes an unwelcome appearance. At Stonehaven, Jeremy's title is challenged, forcing him to fight to maintain his status as the Alpha.