On a winter day, the four Takezawa sisters, ikebana teacher Tsunako, housewife Makiko, librarian Takiko, and waitress Sakiko, reunite for the first time in a long time. Takiko suspects that their elderly father, Kotaro, has a lover and a child. Although the other sisters find this unbelievable, they promise to keep it a secret from their mother, Fuji. However, this commotion also brings to light several conflicts and secrets that lie dormant in the women's lives.