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".
A world where the supernatural is totally mundane and the existence of ghosts, ghouls and werewolves are part of everyday life. But what happens when you're bothered by some supernatural nuisance? You call The Demonologist.
Set in the near future, where environmental conditions have caused some people to find refuge on the ocean floor, an underwater teenage boy and a surface girl work together to find out what caused the catastrophes.