Every summer, my stepfather leaves on a business trip, leaving the house empty. During his absence, my stepmother comes to stay with us, and it's become a tradition for the three of us—my wife, me, and her—to drink the homemade plum wine she brings. This year, everything was set to follow the same routine—until a massive typhoon suddenly struck, throwing our plans into chaos. As the rain intensified, we assumed she wouldn't be able to make it. Just as we'd given up hope, my soaked stepmother appeared at the door. My wife was stranded at her destination due to suspended train services. Left alone together, I found myself spending the night with my stepmother. This unexpected turn of events pushed our relationship into uncharted territory.