Ayano got married half a year ago. One day, she suddenly has a relationship with her step son-in-law. Despite the fact that she has not had sex with her husband for a long time, she finds out the pleasure of womanhood from her son-in-law's rod. The young wife, who cannot control her sexual desire, is gradually attracted to him. The treacherous and forbidden relationship between a mother-in-law and a son-in-law that should never be tied together...