Nao and her husband are moving to a new house, so she cleans up with her father-in-law Toru instead of her busy husband. Nao's husband tells her that Toru is a former sailor, and that he used to tie her up with ropes as punishment, but she still loves him like a real father. One day, Nao breaks a precious plate that Toru gave her. Feeling responsible, she asks Toru to tie her up and scold her. However, Nao feels a new pleasure from her father-in-law's skillful rope handling...
