In the past, a massive spill occured at the Amazon experimental lab. Most of the survivors were destroyed, hot-blooded young teenagers enjoy hunting Amazons and the experiment seemed to be drawing to an end. Far than ending, however, it was entering a new completely phase. The number of cases of ordinary people turning into Amazon without warning was rising. The government formed a new extermination unit to assasinate people who had turned into Amazon secretly struggled to hide the truth.