Wealthy heiress Iori Ryouko is arrogant and looked down upon by those around her. Her assigned banker, Shimura, suffers daily under her demands, gradually losing his pride through constant humiliation. One day, following the woman's instructions for a massage, Shimura secretly mixes an aphrodisiac into the ointment. The effect is immediate and overwhelming—Ryouko begins writhing lasciviously, her body twisting in pleasure. Capturing her shameless state on camera, Shimura sets his plan into motion: to break her will, turn her into his obedient sex slave, and use her as nothing more than a cumdump.