Hibiki, Miku and Chris decide to go on a trip to a hot spring for an unexpected reason. Miku is excited as she plans the trip but of course it's not going to be a normal trip. As Chris feared, it turns into a trip filled with perverted exhibitionism... The three girls walk around the hot spring town in yukatas, practically naked and try out various exhibitionist plays! They end up having some intense lesbian play in the open-air bath!