The hand was fixing the lock, but the eyes were always glancing towards the beautiful and lovely hostess. He seemed to have some dark scheme, and the main target in his plan was none other than the female owner of the luxury apartment where he was struggling to unlock the door. Just like the title of the movie, this deranged repairman had secretly stolen the underwear of that girl and began to perform his heinous acts: kissing the panties, pressing his face against the bra, and masturbating... Unable to resist the urge raging within him, that day he decided to sneak into the young girl's house to indulge in his perverted behavior. Of course, he succeeded, as the weak-willed woman, being alone without her husband at home, after a short period of resistance, the young wife gave in. The most despicable person was the wife, not only did she not inform her husband to call the police, but she also continued to have sex with that young man several times (it's not correct to call him young because his age is not much younger than the husband, "young" here refers to the "strength" of the "underneath"). Perhaps because she was too indulged, she forgot about the man she had vowed to love and cherish for several years. It's a pity for the husband.