Smartly married into the Maki family, Tomohisa discovers that his mother-in-law, Kyoko, and father-in-law are a mask couple due to the latter's infidelity. Kyoko, still in her prime, becomes increasingly sexually frustrated. Tomohisa takes advantage of this and attacks Kyoko's massive breasts. Despite herself, Kyoko begins to enjoy it. Through humiliation play and creampie sex within the household, Kyoko becomes Tomohisa's exclusive big-breasted affair Dutch wife.