In an infinite multiverse, even powers deemed to destructive to be safe can have somewhere they aren't just useful, but necessary or even essential. Which is the only reason certain teens are still alive, and learning to love their work. "All irregularities will be handled by the forces controlling each dimension. Transuranic heavy elements may only be used where there is no life. Heavy atomic weights are available: Arsenic, Caesium, Francium, Lead, Mercury, Plutonium, Radon, and Uranium. Radon and Plutonium have been assigned." Based loosely on Sapphire and Steel, with three main characters from Hunter/Killer, Ultimate X-man, and Worm.