Last year Stiles had an encounter with a Nogitsune. When he and his friends defeated it they thought their troubles would be over but what they didn't know was that a small part of the Nogitsune still lived within him...
Months after the nogitsune, Stiles starts to see his own face around town. He dismisses it as PTSD. That is, until Lydia starts having a feeling that Stiles is going to die. As the pack scramble to find out what is going on, Stiles is forced to face a ghost from a past he didn't know he had and a future that seems to threaten his place in the pack.