Sumire, a bride under pressure from her mother-in-law about not having children yet, receives a sex ban order one month before their scheduled hot spring trip due to family planning purposes. However, on the day of their trip, she gets rejected by her husband when trying to have sex. Meanwhile, her father-in-law also gets turned down by his wife when attempting to embrace her. Both filled with sexual desires, they decide to relax their bodies at the hot springs. By chance, Sumire's alluring bathing figure catches her father-in-law's eye, causing him to lose control over his desires...
