Frank McConnelly is a loving father and husband, a brilliant business man, and a secret doomsday prepper. To celebrate taking his company public, Frank is putting on the party of the year in his Las Vegas Mansion. During the party The President of the United States gives an address warning people to stay inside due to a strange weather pattern that is cutting off communications with major cities across the globe. Suddenly the power goes out as a massive fog bank moves in. In the ensuing chaos Frank escorts people down to safety of his bunker. Everyone is surprised to see the bunker is actually an underground house complete with a yard and a pool. But, In the thick fog something is stirring. Something that hungers. Will the bunker protect them or will they be the next meal?
