Captain John Hart sets off Rift events and massive explosions all across Cardiff, forcing the Torchwood team to split up to handle the crisis. While Gwen deals with a police force in chaos and Owen tries to avert meltdown at a nuclear reactor, Jack confronts John. But his former partner isn't in control of the situation: he's being manipulated by Jack's brother, Gray, who has bonded a bomb to his flesh. Having been tortured for years by a sadistic alien race, Gray blames Jack for his fate -- and now he desires nothing more than to destroy Jack, and everything he holds dear.