21-year-old second-year music college student Ryo Aoba (pseudonym) once worked as a race queen. Her stunning figure and youthful charm, combined with her deeply rooted masochistic desires, drive her to seek new thrills. Under the erotic mastery of bondage artist Midara, her body and mind are completely dominated through intense BDSM training. What she craves isn't mere pleasure, but the transcendent sensation found beyond the boundaries of total control and ultimate release.