Three people were brutally murdered in a mahjong parlor: a corporate racketeer, the head of a yakuza gang, and the president of a real estate company. At the request of the Tokyo Metropolitan Police Department, Interpol (International Criminal Police Organization) officials came to Japan. A black mahjong tile left at the scene of the crime leads to the emergence of a man named Shompai Bokusai, a hitman wanted all over the world...