Thick Fog Unleashes Bloodthirsty Creatures On To A Town Trapping Humans Inside

After a powerful storm damages their Maine home, David and his young son head into town to gather food and supplies. Soon afterward, a thick fog rolls in and engulfs the town, trapping the David and others in the grocery store. Terror mounts as deadly creatures reveal themselves outside, but that may be nothing compared to the threat within, where a zealot calls for a sacrifice.