A refined, pampered daughter-in-law is subjected to intense rope bondage training by her resilient father-in-law, a man who endured the turbulent Showa era. An Towa Ko fails to fulfill her duties as a wife, but excels as a slave, revealing her obedient and adorable masochistic side. Through the father-in-law's strict discipline, she is transformed into a perfect object. The passionate spirit of a man shaped by the Showa era burns strongly within him.