mitsuki nagisa lives in a small town and works at her uncle's inn every summer vacation. after finishing her chores and taking a bath, she notices her uncle staring at her with a lewd gaze. he reminisces about her mother, whom he once had feelings for. the next day, her uncle calls her to clean the storage room, where he ties her up in the dark and rapes her. her summer vacation turns into a hellish ordeal.
