The daughter who′s in high school is annoyed with having her period while her mother fears her menstrual cycle may have stopped too early. Having fallen in love with a woman who had her uterus removed, the father suffers the menstrual pain in his heart on behalf of the woman. When the daughter s period is about to finish, she finds her first love. However, when her mother starts her period, she loses her husband′s love. On a good day for having a period, for flowering, mother and daughter meet again as women.