Jun’kichi, the boss of the Kogiku family, and Ken Onbeya are a small-time yakuza duo who make their living running a betting shop. They were known as ‘honourable bookies’ who would relentlessly collect debts from losing customers but pay out winnings promptly to winners. One day, Ken sets out to collect a 3 million yen debt from Kurosu, who is in arrears. However, there he is reunited with Keiko, a woman he once loved. She was now Kurosu’s wife, gazing sadly at her husband, who had become a wreck, consumed by gambling… Upon enquiry, Ken learnt that the company Kurosu ran had already gone bankrupt, and to make matters worse, he had taken out a loan of no less than 400 million yen from the bank. Unable to stand by and watch, Ken offered a helping hand, but the self-interest of a major bank official and the ambitions of Ezaki, the second-in-command of the Wakakura-gumi, stood in his way.