The monthly Mahjong party at Yamada's house is held regularly. However, the three men decide that it's boring to have just three guys, so they pool their money together and call a companion. However, when a gal companion, Sakura Tachibana, arrives, Yamada falls in love at first sight! Everyone gets excited and gets drunk except for Yamada, and when Sakura is knocked out defenselessly, Yamada does something outrageous...