I bet some of you have played doctor with your older sister, younger sister, or neighborhood girls when you were young, remember that excitement? This young brother and sister aren't satisfied with just doctor play, they engage in daily "soap play." The sister Mei is obsessed with her brother and decides to create a makeshift brothel in her room just for him. When her parents are asleep, she opens up shop for her brother, offering him a forbidden incestuous experience filled with endless rounds of intense pleasure until morning.