By sheer chance, Shinji is forced to participate in a mahjong tournament in which the winner can be granted a wish of any kind. Aiming for the victory, Shinji works hard with his friends in the special training. Characters from Fushigi no Umi no Nadia (i.e. The Secret of the Blue Water) and Top o Nerae! (i.e. Gunbuster) are also attending the tournament for their own dreams.