Sayoko is desperate to bear a child of her own, but her live-in boyfriend Shinsaku strenuously objects to the idea. One day, someone leaves behind a six-year-old child at their door, claiming that Shinsaku—or four other men—is the child's father! Sayoko and Shinsaku set out on a journey to find the real father.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.