It was a rainy night when a typhoon hit. The Sakamoto couple were to have a dinner party with Eriko, the wife's coworker. However, public transport was stopped and the wife was unable to return home from work. By chance, Eriko, who was in the area on a business trip, arrived soaking wet. The husband, who had had feelings for Eriko before he married his wife, could not contain his excitement at spending time alone with her. Instead of calming down, the storm intensified, and the distance between the two gradually narrowed as the sound of the rain got stronger...