Without humanity's knowledge, extraterrestrials have begun to take over human bodies. Toshio, a promising racing driver, was snatched by a mysterious group and offered a "trial" in return for money. However, this test evolved into a sinister training regime to shape him into a Zombie Hunter. Although he initially chose to return to normal life, Toshio eventually witnesses the dire aftermath of being a Zombie Hunter. Surrounded by empty individuals and alien intruders, Toshio embraces his new calling as a Zombie Hunter...