Nanami was raised in a respectable family that runs a long-established kimono wholesale business. She is a pure and innocent beautiful girl who practices rhythmic gymnastics at an all-girls school. One day, her father, struggling with finances, incurs a massive debt... Nanami is sold to a pair of perverted and cruel brothers with huge cocks. Terrified, she is told she is about to be trained. Forced to take drugs, her body becomes hypersensitive and is bound in rope. Driven mad by the terrifying female body torture she experiences for the first time, she is made to cum over and over again. In the end, she is turned into a lewd meat doll who feels pleasure no matter what is done to her.