Once you're part of the pack, there's no getting out . . .

Mild-mannered stay-at-home dad Simon Burns has undergone a life changing transformation - after being indoctrinated into the pack, he has become a werewolf. Fearing that the truth would end his marriage, Simon has told his wife Alison that he is suffering from a psychological condition called lycanthropic disorder, in which a person thinks he is a werewolf. For the moment, his secret remains safe.

But NYPD homicide detective Geri Rodriguez has not forgotten about the mysterious wolf-like murders that remain unsolved,and when she hears that one of the witnesses, Diane Coles, was brutally murdered outside her parents' home in Michigan, she resumes her investigation. She's focused on a group of dads - Michael, Charlie, Ramon, and Simon -- who had a connection to the unsolved murders.

Simon had been trying to stay away from the pack, but he has been tipped off by Michael's father that there may be a cure hidden somewhere in the Brooklyn brewery where Michael lives. He wants to find the cure, and to see that Geri doesn't become another mystery death - but his own life and the lives of his wife and son may be in jeopardy.