Natsumi, who works diligently as a waitress at an inn, is a divorced single mother who returned to her hometown from Tokyo. She continues to raise her child and work every day! In the countryside, there are no new encounters, and she has been sexless for the past few years! One day, she is perplexed by an invitation from a guest staying at the inn, but her body heats up and throbs with her natural sexual desire! She gets addicted to threesomes with a male customer at work, and her sexual desire is awakened!