A night alone with my dream wife's mother

My stepfather leaves home on business trips every year after summer. Meanwhile, it was customary for my stepmother to come to our house and drink the homemade plum wine that my stepmother had put on them together with me and my wife. And my stepmother was scheduled to arrive on this day, when a large typhoon had hit me directly, but the rain and wind gradually became more intense, and just as I was about to give up... my stepmother came, wet and wet. My wife stopped the train and couldn't get back from the trip, so I ended up spending the night alone with my stepmother...