Bride Hikaru, under pressure from her mother-in-law about not having children yet, finds herself forbidden from sexual activity by her husband one month before their scheduled hot spring vacation. However, on the day of their trip, she's rejected once again when trying to have sex with him. Meanwhile, her father-in-law also attempts to embrace his wife but is turned down as well. Both characters are filled with pent-up desires, leading them to seek relief in the hot springs. By chance, Hikaru's alluring bathing figure catches the eye of her father-in-law, who struggles to contain his lust...

姑から孫の出産はまだかとプレッシャーをかけられている嫁・ひかるは、1カ月先の温泉旅行まで子作りの為にSEX禁止命令を下されてしまう。しかし旅行当日、あろうことか夫にSEXを断られてしまう。一方、義父も妻を抱こうとするが同じく断られてしまう。性欲を持て余す二人は、悶々とする身体を落ち着かせる為に温泉へ向かった。そして、偶然にもひかるの艶めかしい入浴姿を目撃した義父は、欲望を抑える事が出来ず…。