The long-established hot spring inn "Kyonyukan" has been secretly popular with honeymooners for a long time. The inn is run by the beautiful young proprietress, Naoko, who has big breasts. At first glance, it seems like an ordinary hot spring inn, but when a honeymoon couple visits, she makes the husband fully erect with food made with natural aphrodisiac-boosting ingredients and the hot spring's effects of enhancing erectile power, puts the wife to sleep with food laced with sleeping pills, and then spends the wedding night beside the wife, demanding that she provide the best hospitality and cum inside her until she has drained all of her husband's sperm.