California, 2020. After a severe injury, ace mecha designer and pilot Reiko Morikawa is recruited to a secret organisation plotting a revolt against the corrupt governor (and Nazi sympathiser) of the United States of Japan. When their plan to save the USJ from itself goes awry, the mission is only saved from failure because the governor is killed by an assassin known as Bloody Mary. But the assassin isn't satisfied with just the governor. And now Reiko and ex-cop Bishop Wakanda are hot on the trail of Bloody Mary, trying to stop her before it's too late.