The five-member group of soapland girls has arrived for a hot spring trip. They encounter boys from a high school club staying at the same inn. The girls, in high spirits, expose themselves to the boys who are cleaning the outdoor bath. The boys, unable to hide their excitement at seeing the girls naked, are further teased by the girls' mischievous advances (ultra-close contact, allowing them to touch their chests). Under the boys' passionate caresses, the girls unexpectedly become aroused!? Unsatisfied, the girls plan to seduce the boys with their soapland techniques...