Erebus centers around the Gorham House, a mysterious old hotel with a torrid history of violent occult activity, as well as supernatural, and paranormal. Seeking to document the hotel for a new book, Samantha and Benny, journey to investigate the hotel, learning of its terrifying history along the way by relaying three horrifying tales of its previous owners.

A group of occultists have resurrected Lilith, first wife of Adam, in hopes of avenging her alleged betrayal by God. Lilith has been reborn in the flesh and now walks among the living. Her minions are setting up the proper channels for their master’s ultimate revenge: the apocalypse. With the deck stacked so high against the forces of God, the Holy Spirit Himself makes a vow to take out Lilith once and for all.