An unlikely group of vigilante consisting of a convenience store worker, a jobless teenager, a high school girl and a retiree, join forces to take back the city from delinquents and biker gangs causing public nuisance and running rampant throughout the city.
Things went well until a mysterious individual appears and offers them a job to form a private security company to legitimise their vigilante business which is getting attention from the police. To further complicate things, a serial killer began targeting the group.
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It’s like a Japanese version of Hollywood’s Kick Ass.