A great Japanese daimyo once sent one of his samurai on a very important matter... The matter concerned a Gad Gad who was plotting evil intrigues. A samurai goes along a given route on a cunning "spy" mission, but Gad Gad, having decided that "the wedge blows out the poison", sends his assistant ninja girls, whom the samurai methodically defeats in exhausting bed fights with the help of his "miracle sword".