A tragedy befalling a young girl. Due to her father's debt, Airi Honoka is sold into sexual slavery. Before being handed over to clients, she is subjected to trial rape, forced to learn deep throat techniques through brutal gagging. As she is trained and degraded, her body is documented being used as a sex slave. Her mature, voluptuous breasts and perfectly slender waist—her so-called "golden ratio" figure—exist only to increase her market value. Then begins the gangbang of consecutive creampie after creampie, transforming her body into nothing more than a tool for male pleasure.