Miyanaga Saki is a high-school freshman who doesnot like mahjong. Ever since she was a child, she would lose her New Year gift money during her family mahjong game. If she won, her parents would be upset, and if she lost, well, she lost. As a result, she learned to play in such a way that her score always remains plus/minus zero: not good enough to win, but not bad enough to lose. When we meet her, she being dragged to her school mahjong club by an old friend. How will a girl who hates mahjong, yet has become adept at the game as a result of her upbringing, survive in this environment?