A frank depiction of a perverted woman having an affair with her father, and her many abnormal sexual habits!! Mariko Yamanaka, 29 years old. Just before turning 30, she is having a second sexual relationship with her father, and has an outrageous sexual habit of getting pleasure from dressing in children's clothes and screaming "Dad" during sex. She lives with her father in an apartment, but perhaps because of her abnormal sexual habits, she is targeted by even more dangerous men...!