Salesman Shinobu, assigned to clean a resort owned by his boss, seizes the opportunity to act on his long-held feelings for Rumina. He gradually takes complete control over her, transforming her into a genuine masochistic woman and turning her into his obedient shemale slave. The story unfolds through intense scenes of dominance and submission, exploring the pleasures of control and surrender, with themes of aggressive female domination, BDSM, bondage, leg fetish, cowgirl position, and sex slave dynamics.