A down-on-his-luck archaeologist returns from a cave expedition that contains a cursed relic that's also a portal to Hell. He discovers that the only way to stop the curse on his family is to go back to the cave and destroy the relic

Detective Damien Seryph investigates a string of murders that connects to a group trying to bring forth the 4 King Demons of Hell. Damien's past connects him to those involved and will force him to become "The Demonologist".