Misako, a boss who is strict with her underachieving subordinate Sato, is training him to become a full-fledged employee. One day, Sato's work is not completed and she has to work overtime. Misako is annoyed with Sato, but when she notices Sato's lewd gaze on her, the situation suddenly changes. Feeling happy that Sato sees her as a woman, Misako shows off her body and seduces Sato. Alone in the office late at night... it doesn't take long for them to fall into a forbidden relationship...