Ryoka Miyabe had been living without sex with her husband for several years. She began to suspect him due to his late returns home every day and inability to take even a single day off. Feeling their marriage was on the verge of collapse, she boldly invited him on a hot spring trip. However, her husband canceled at the last minute, claiming sudden work obligations. Disheartened and impulsive, Ryoka decided to go on the trip alone. But upon arrival, she discovered both her husband and herself had been canceled, leaving her with nowhere to stay. As she stood helpless, an employee from another inn approached her and led her to a suspicious-looking ryokan...