Shoichi (Kentaro Shimizu) has become the top player in the underworld of mahjong. His daily life is always in danger as he plays for huge sums of money in a single night. The only time he can relax is when he plays mahjong for "fun" at a mahjong parlor. One of the members is Jun-chan, a pimp, but there is something wrong with him... In Shinjuku, where the thoughts of various people intersect, Shoichi's biggest rival appears before him!