Ray Waller, a former major league baseball player is forced into early retirement by a degenerative illness, he moves into a new home with his concerned wife Eve, teenage daughter Izzy, and young son Elliot. Secretly hoping, against the odds, to return to pro ball, Ray persuades Eve that the new home's shimmering backyard swimming pool will be fun for the kids and provide physical therapy for him. But a dark secret in the home's past will unleash...

The Yellowjackets barely made it through summer in the woods, but now as winter begins to bite, we'll see if hunger and desperation turn into full-on psychosis. While there may or may not be a dark and powerful force inhabiting the wilderness, their survival could depend upon what they choose to believe. Meanwhile, twenty-five years later, each survivor must ask themselves Is the darkness coming for them, or is it coming from them?