Yoshimura is an employee at MC Co., a company that deals in brainwashing devices, where he is constantly labeled as "useless" by his female superior. Enduring daily criticism and frustration, his life is filled with resentment. One day, he decides to turn the tables by using a mind-control device to dominate his boss. In a secret session hidden within the office, he passionately gropes her big tits and indulges in unrestrained pleasure. This intense encounter, carried out in a concealed corner of the workplace, becomes the ultimate act of revenge and gratification for Yoshimura.