The youngest of three brothers and sisters, "Machi". Under one roof, the brothers and sisters who live in harmony had a secret that no one could tell. The eldest brother of de S devours his sister's body almost every day, and the second elder brother of de M erects in the form of such a "town" .... One day she is squid with her eldest brother's big dick, and one day she seduces her second brother and mischiefs Ji Po. This is a daily record of three obscene brothers and sisters, whose brothers and sisters incest blended into their daily lives as a matter of course.