Fifteen years ago, Audrey Figg's little brother, Benny, vanished on a family vacation to Devil's Den state park, a day that split her life in two. Now, Audrey is a park ranger in the very same woods with expertise in wilderness search and rescue. Audrey has found a rhythm to her days: training new rangers, tending to injured hikers, protecting the backcountry and still, searching. When a little girl, Ivy, suddenly goes missing on the trails, Audrey can’t help but notice the similarities to her own brother’s case. As Audrey widens the scope of her search, she begins to believe Ivy wasn't merely lost; it looks like she was taken by something --- and maybe Benny was too. Yet the closer Audrey comes to answers, the more old memories push to the surface. Audrey is haunted not only by her brother's loss, but a terrible secret from that day. A secret she has never shared with anyone.