Due to work reasons, the younger brother asked to stay with the older siblings for a period of time. He harbors a very dark intention here. He has harassed the sister-in-law several times but couldn't do more because the older brother was at home, and the sister-in-law, fearing the loss of family affection, dared not tell her husband. The fire near the straw eventually burns. The day the older brother went to work was the perfect opportunity to do what the younger brother wanted. The despicable younger brother raped his sister-in-law. At first, she resisted weakly, but when she realized she couldn't do anything, she seemed to submit and do what the younger brother asked, even enthusiastically engaging with him, perhaps due to lust and pleasure when being intimate with a young man.