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