Due to climate change a new race of flesh eating predators arise, who invade and eat everything living on earth. In a residential neighbourhood in a Danish suburb nightmare like scenes are being experienced first hand through the eyes of two teenage brothers, who can’t stand each other, but are now suddenly forced to barricade themselves in the basement together, to avoid getting eaten. From one day to another, without parents and without electricity, food, water and contact to other people, the brothers have to learn to live together in their vital protection bunker, while monsters move past the basement windows and heavy, sharp claws can be heard moving around upstairs on the wooden floors.

The family man farmer John Rollins is stressed with his financial situation: the crows and the lack of irrigation are destroying his crop of corn; the bank is near closure of his mortgage; he does not have credit to fix the water pump or to buy seeds; and his marriage is in crisis and his wife Mary is giving too much attention to her friend Tommy. When John accidentally discovers a hidden compartment in the barn, he finds a creepy scarecrow but his son Michael makes him promise to destroy it. However, his neighbor Jude Weatherby visits him, gives a six-pack of beer to the abstemious John and convinces him to put the scarecrow in the cornfield. Out of the blue, the life of John changes: the crows die; the pump works again irrigating the land; and the banker responsible for the closure has an accident and dies. However, he feels that his land is possessed by something evil that is threatening his beloved family.