Kintaro is a reformed delinquent, the former leader of a biker gang who has gone straight. Working at a construction company, his unorthodox tactics cause trouble with his colleagues. He is transferred to a tiny countryside branch, where he butts heads with his lazy superior until the two men discover a plot by the competition to put the construction company out of bussiness. With the help of his old biker friends, Kintaro prepares to confront the masterminds behind the scheme.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.