The storm rolled across Long Lake in Maine with a fury, leaving David Drayton and his family with fallen trees, downed power lines, and no electricity. At his wife’s request, David heads to the local supermarket to stock up on supplies, taking his young son and neighbor along for the ride. But the strange white mist that lingered on the lake has followed them to town, stranding them all in the store. Because something in the fog is taking people -- and you can hear their screams.