Set in Hakone Onsen, Asahi Yano, a new SOD female employee in her first year in the production department, heads to the men's bath wearing only a towel, as part of a popular project! She takes on the missions of "washing the male customer's whole body with her feet" and "scrubbing the male customer's buttocks with her private parts." She bathes in black pantyhose and, surrounded by the dicks of ordinary male customers, she dutifully carries out her duties! Will she be able to complete the mission?