Two disparate young women working for a company that conducts euthanasia are dispatched to a remote estate to perform a custom assisted-suicide ritual, but unwittingly summon the wraiths of a Death Cult that once inhabited the property.

In a world in which Maniac Killers are so plentiful that they regularly stumble upon one another and fight to the death, an evil mastermind identifies a financial opportunity. He begins to round up 9 of the most notorious killers to battle in a custom built, camera saturated, wooded arena.