In the midst of overwhelming masochistic desire, Yuri Shibasaki becomes abnormally aroused while being licked by random customers in an adult video store. Ordered around by a well-endowed stranger, she's led into the pleasure of a threesome. A modest woman soaked by exhibitionism, experiencing the crossover of shame and ecstasy. Her voluptuous big tits are trained as a full-blown masochistic sex slave, her burning body penetrated by a rock-hard cock. In a state of extreme excitement, she's driven to relentless, mind-blowing orgasms.