To pay off her husband's debts, Ryo begins working at a certain spring resort. Initially hesitant, she gradually finds emotional support in her fellow newcomer Anri and the kindness of Yuuko. Though she struggles daily with sex training under instructor Kawamoto and sexual harassment from Nonoshima, Ryo discovers she enjoys sex and begins to look forward to Kawamoto's training. As her resistance fades, she starts uncovering a new side of herself.