A man who quit his job to start a cleaning service finally saw his business stabilize after one year. During his first monthly contract cleaning a luxurious mansion, he became attracted to the married woman living there. One day, he unexpectedly encountered the rarely seen husband and began to suspect that she was forced into marriage after being blackmailed or trapped by some hidden weakness. He then plots to elope with her. However, her true nature turns out to be far beyond his imagination—her mind and body harbored secret sexual desires that the cleaner could never have anticipated.