When Dr. Bree Mathison's plane plummets into the Alaskan wilderness at Christmastime, she is torn between grief and panic. With the pilot—her dear friend—dead and wolves circling, she struggles to survive.

Search and Rescue leader David Stone fights his way through the elements to save her. David suspects the plane crash might not have been an accident, spurring Bree's sense that she's being watched. But why is someone after her?

Suddenly Bree finds herself caught in the middle of a whirlwind of secrets during the holiday season. With everyone she cares about most in peril, Bree and her promised protector must battle the Alaskan tundra and vengeful criminals to make it to the New Year.