On the night Typhoon 17 makes direct landfall, Sanro, his wife, and his sister-in-law Yumi are preparing for a move. However, due to torrential rain, transportation grinds to a halt, and the wife becomes stranded at her work assignment, unable to return. Soaked to the bone, Yumi rushes over and ends up spending the night alone with Sanro. The storm shows no sign of easing—instead, it intensifies, eventually causing a blackout. In the darkness, lit only by candlelight, their wet bodies draw close, wrapped together beneath a single thin blanket. Amid this unexpected situation, their relationship takes a sudden, new turn.