Sign of the Jack(1970)

ネオン警察　ジャックの刺青

Hanamura, widely known in gangland a professional trouble shooter has the sign of the Jack tattooed on his chest. His follower is his sworn partner Kurahara. They attempt to help the Towada-Gumi gang against its rival group the Kamioka-Gumi which is seeking the chance to conquer the Towada-Gumi in collusion with Noda, a big shot in the town operating a real estate firm.