Ema was a little tired of her husband's peculiarity and began to get frustrated. At that time, she visits to see her brother-in-law, Yuta ... Unlike her serious husband, Yuta, who is frivolous, senses the hiding spirit of help and has been persistently persuading her. Someday Ema is swept away by her brother-in-law and feels a piercing climax that her husband can not taste. She tries to divide it into a one-time mistake, but her body seeking more pleasure can't resist his relentless invitation ...