A drug made to enhance the human body in order to combat the desolate world that was destroyed by the war many years ago. Tested over and over again, many of the subjects died or were turned into unspeakable horrors due to the effects. But there were a handful that had risen past the agony that the drug instilled.
Ryker is one such prisoner. The drugs were tested on him and because he survived he became a lab rat. A very pissed off lab rat. When his chance comes to seize freedom, he doesn't waste it.
By fate or chance, he comes into contact with the gang Fukkatsu. They are out looking for answers to the drug that infects one of their own; Valkyrie. In search of a cure for it, they are traveling to find the source of the drugs manufacturing, one of which Ryker might be able to assist in.
If he were willing. Past the anger and the blind need to get revenge; Ryker might be able to help. But he's not listening and he doesn't play well with others. Not even with the pretty blonde who's in charge of watching over him.
Even so, Ryker finds himself lured in by the young man's charms.