简介
A former gangster who joined the army during World War II and became a hero is now leading a respectable life, out of the rackets. However, when he is called before a grand jury probing organized crime activities, his former colleagues in the mob are afraid he'll spill the beans, and prepare to take measures to ensure that he doesn't.。总是被欺负的幕之内一步在机缘巧合下遇到职业拳击手鹰村，并从此开始了拳击生涯。初入鸭川会的一步在鸭川会长严厉的训练下，终于登上了日本冠军。在卫冕第一战中击败天才拳击手真田之后，下一个对手是曾经在鸭川会一同挥洒汗水的师弟山田直道。面对不顾情面，大言不惭的宣称要夺取冠军宝座的直道，一步的内心动摇。了……。