Sumire, the most beautiful girl in the area, will once again be taking part in the annual hot spring get-togethers of the neighborhood association. However, her father, who always accompanies her, is unable to go due to work, so this time she will be accompanying the group alone as the caretaker. Sumire has known the local men since she was a child, and the innocent Sumire has no Kokoro about them. However, the ugly old men, who are aroused by the grown-up appearance of the beautiful girl they have known for a long time, take advantage of Sumire's innocence and gradually begin to sexually harass her repeatedly...