Lacking in gambling skills, Tsuzura Hanatemari finds herself at the bottom of the food chain — until one day, an old friend transfers to the academy.

With a traitor in their midst, Mary struggles with trusting her friends. Meanwhile, the opposing boys' team argues over whether to rejoin the game.

Sakura and Mary brace themselves for the final game. In desperation, Mary asks her friends for help, using whatever means necessary to win.