“Gamma free or your money back” is her motto. Sixteen-year-old Mayfly has a special talent. She is a glow girl. The world is a post-apocalyptic shit hole after a nuclear war wiped out civilization, leaving survivors lorded over by warring church states. But Mayfly has no intention of living under the yoke of religious maniacs. With the touch of a hand, this girl can transform anything radioactive to pristine and pure, and the coin made from decontaminated salvage plundered from the dead cities will put wheels on the road to her salvation; she is searching for a mysterious city called the Citadel where a machine oracle possesses the sum total of all humanity’s knowledge thought lost.

However, she is not alone in her quest, a three hundred year old mercenary named the Astronaut knows the location of the key that open doors to the Citadel; a key buried beneath a blast zone known as the black glass where death by radiation is a certainty. . . Unless you are a glow girl. Unfortunately, there are other seeking the dark secrets held within the walls of the Citadel, and it’s only a matter of time before the weapons of mass destruction are unleashed upon the world again.