I can't tell my husband that my father-in-law impregnated me... - On a two-day, one-night trip to a hot spring, I was creampied over and over again. - Kanna Imai - Kana Imai

The movie revolves around Kanna Imai's illicit relationship with her father-in-law during a family trip to a hot spring resort. As the story unfolds, it becomes clear that Kanna's husband is unable to conceive, leading to her father-in-law's pursuit of her. The central dramatic tension lies in the taboo nature of their affair and its consequences, including Kanna's eventual pregnancy with her father-in-law's child. The title sets the premise for a complex exploration of family dynamics, moral boundaries, and the repercussions of forbidden desires.