毎年恒例の町内会の親睦を深める温泉旅行に、今年も参加することになった地域一の美少女はる。しかし、毎回同伴していた父親が仕事で行けないことになり、今回は1人で世話役として付き添うことに。地域のおじさん達とは幼い頃からの顔見知りで、純真無垢なはるには警戒心も何もない。しかし、昔から知っていた美少女の成長した姿に欲情した醜悪おやじ達は、はるの純粋さにつけ込み次第にセクハラを繰り返すようになり…

Haru, the prettiest girl in the neighborhood, is once again participating in the annual hot spring trip organized by the local community association to deepen their camaraderie. However, her father, who usually accompanies her, is unable to go due to work, so this time she will be accompanying him alone as a caretaker. Having known the older men in the neighborhood since hood, the innocent Haru has no reason to be wary of them. However, the ugly old men, aroused by the sight of the beautiful girl they've known since hood, take advantage of Haru's innocence and gradually begin to sexually harass her…