Ethan and Daria Halbrook retreat to a two-story cabin deep in the northern woods, seeking solace after a devastating miscarriage. The winter forest is silent, oppressive, and seemingly untouched—but isolation begins to distort their perception. At first, the unease is subtle: shadows that linger too long, distant snapping branches, and faint whispers carried by the wind. As the days pass, they notice footprints in the snow, small cries in the darkness, and unnatural animal behavior—signs of something ancient watching them.