Two brothers crash into the decaying Earth to stop a capitalist from manufacturing an immortality serum, which is synthesized utilizing heinous methods and leaving an increasingly dire infertility rate in its wake.

After a near-death drowning accident, a young boy's family is horrified to discover he has become possessed by a legendary demon from the depths of the lake. As the family races against time to save the boy's soul, the evil monster inside the child tears the family apart as it seeks to destroy everyone in its path.