Foley is a happily married and loving father. He has one vice he keeps hidden from those around him...pornography. While online Foley finds an ad for a porn film shooting in his town. While he would never dream of being unfaithful, he begins to contemplate what really constitutes cheating. Grave Mistake follows Foley on his journey to Hell where he encounters hordes of zombies, a cannibal cult and countless other people on his quest for redemption.