Cain still wanders. Marked with blood red eyes as a constant reminder that he is humanities first killer, and cursed to an Immortal existance, the Heretic Son serves his sentence. Searching for redemption Cain now lives to send the demons that prey on innocent mortals back to the pit.

In our modern world Cain's personal demons have returned to haunt him. Magnus, an ancient Incubus, and one of Cain's own cursed bloodline has come for revenge. Adamstown, Pennsylvania is now ground zero for a supernatural battle of biblical proportions. As Magnus plays his games the body count rises. Cain will have to battle Heaven and Hell to save the town and the few mortals he has ever cared for. What Cain doesn't know, he is the Key to the Gates of Hell.

As Cain watches Magnus devour innocents his darkenss threatens to consume him. If Cain allows it to take over the Gates will open unleashing Hell on earth. In the end Cain will have to make a choice. Will the Heretic Son choose the Stairway to Heaven or the Highway to Hell?