A naked man and woman are entangled in a rural inn far from their everyday lives. The thrill of being seen by someone in a mixed bathing hot spring is now nothing more than a source of excitement for the two of them. "No! Someone is watching me!! But don't stop thrusting!' Eight lewd women, including married women, college girls, and call girls, engage in intense, orgasmic sex spree in an open-air bath and at a ryokan inn.