A married woman named Sumire works as her boss's secretary while dealing with sexual frustration due to her husband's lack of interest. She eventually gives in to her boss's advances and becomes his personal sex partner to satisfy his desires. One day, they are caught by one of the employees having a secret rendezvous in the president's office. This man has been admiring Sumire for her beauty and skills at work, and he uses this opportunity to pressure her into sleeping with him too. Note that the contents may vary depending on the recording method used.