Jack Gregory, the CIA's top assassin, went rogue after a mission gone wrong. When a confrontation leaves him bleeding out on death's doorstep, he is faced with an offer from a dark figure named Anchanchu. If Jack is willing to act as a human host for Anchanchu, the entity will revive him and give him another shot at life. Jack takes the deal ... but he must now face the consequences of having the same dark creature in his head as some of history's greatest villains. Struggling with desires and memories that are not his own, Jack is not the man he once was. One year later, he is known internationally as The Ripper, assassin for hire, and is faced with having to wrest control of his dark compulsions while preventing a nuclear attack on the United States.