A metamorphosis masochist mother "Yui" who has been trained by a man called her husband. One day, the man orders his daughter "Urara" to be presented as a slave. "Yui", who felt that she would be abandoned if she refused, decided to offer her daughter to the slave. - When her daughter goes out, she cuckolds her daughter's boyfriend and shows her daughter how she is disturbed by bondage sex. "Urara", who has the blood of a masochist woman, gradually begins to be sexually excited, and both mother and daughter fall into the swamp of bondage training. #養老P