The father-in-law was troubled... Why couldn't he have a successor? One day, he accidentally witnessed his son and daughter-in-law having sex, and he became convinced... That his son lacked the ability as a man... The father-in-law decided to take matters into his own hands and impregnate his daughter-in-law. At first, Reiko resisted desperately with reason, but... Eventually, her instincts awakened, and she became a woman before her father-in-law. However, her husband witnessed this scene. What action did the enraged husband take? This is a story of an abnormal love affair where a family, shattered by common sense, is bound together by the bond of "female" and "male". What will be the outcome this time...?