Mizuki, deepening her studies as a caregiver, was assigned to look after the son of the company's president. One day, while playing with the son, a minor incident caused her emotions to flare, and she impulsively shoved him—lightly, but enough. That fleeting moment of anger ignited the president's fury, driving Mizuki onto a path of complete submission. As Mizuki takes her first step into this new fate, the real ordeal is just beginning.