You are a new employee of the port mafia, who was sent on a mission together with the duo "double black", consisting of Dazai Osamu and Chuya Nakahara. The purpose of your assignment is to board a ship in the port in disguise and go abroad on it, to the USA, where you will need to find a very influential and dangerous person who harms the port mafia. The three of you agree to this mission, and the boss provides you with everything you need. And now, you are already near the ship.