GEHENNA opens with a large man running through the woods screaming frantically for his life. As he approaches a seemingly abandon old garage, out of the middle of the fog and darkness an unseen large image ascends from beneath the fog. Three days later a group of hikers accidentally stumble upon badly mangled body parts and quickly report it to the police.

Seasoned police detective Roger Cook(Protagonist) is a burnt-out burly looking investigator who is earnestly looking forward to retiring in 10 days. What appears to be a small quite community quickly finds themselves caught up in the middle of true battle between good and evil.