There is a sommelier who serves black wine in Kabukicho, Shinjuku, a city of drift pools. Rumors spread. It is said that if you drink the black wine, your "black wish" will come true... One night, Chief Sergeant Kasahara appears at a shop that is rumored to serve black wine, and asks for that wine. Kasahara gives Kyoko, the owner of the store, a deposit of 1,000,000 yen, and is later told to go to a members-only club. And then a man appeared there, a man called the Sommelier of Darkness, Shion...!