[Machine Translation] Crow Bank Central Branch, an ordinary bank anywhere in the world. One day, Teki Mitarai, a new bank employee there, is taken by his boss, Senmaru Usami, to the basement of the bank, a department he has never heard of called the Special Operations Department. There he finds a "gambling hall" run by the bank. Mitarai is captivated by the mysterious gambler Maketsuchen's fights, and he cannot forget the blood-curdling battles...? A new era of gambling battles between bankers and gamblers is about to begin!