When Miyanaga Saki was a child, she would always lose her New Year’s money during her familys mahjong games. If she won, her family would be upset, and if she lost, well, she lost. As a result, she’s learned to play in such a way that her score always remains plus/minus zero: not good enough to finish first, but not bad enough to finish last. Now a high school student, Saki dislikes mahjong and avoids it. Until one day a friend drags her to the schools mahjong club, where her hands touch the tiles once again...