The race against time gallops to an astonishing finish in the incredible conclusion of this time- traveling adventure. Phineas B. Fuddle leads Angus and McKee to an alternate-reality medieval England, where demons, angels and saints are all too real and Hell literally exists on Earth. As the countdown to Armageddon ticks away, McKee and Angus must fight their way to the Tower of London, where a corrupt church holds Fuddle captive. Will they save the mad professor,and the universe, in time?
— Description from Comic Vine community (comicvine.gamespot.com).