The daughter-in-law, Kanna, who is pressured by her mother-in-law about the birth of a grandchild, is ordered to refrain from sex for the purpose of making a baby until their hot spring trip in one month. However, on the day of the trip, she is surprisingly denied sex by her husband. Meanwhile, her father-in-law also tries to embrace his wife but is rejected as well. The two, unable to vent their sexual desires, head to the hot spring to calm their bodies. Then, the father-in-law happens to catch a glimpse of Kanna's alluring bathing figure and cannot control his lust...
