SeongRi & Kyeong Bin are twins born via artificial insemination, later seperated at birth. Both twins are unaware of each other until Seung Ri's mother abandons her one day & forces her to go to her real father. Seung Ri misses her mother and has difficulty in adjusting to her new family, including her twin brother (Kyeong Bin) and 3 sisters (i.e. Yeo Kyeong, Nam Kyeong & Sae Kyeong). Her friend's brother Soo Cheol (AhnJaeWook) befriends her oldest half sister (Yeo Kyeong) who is able to hear but unable to speak due to an accident during childhood.
Ja Wang, always cheerful and well-liked by everyone, is the dedicated leader of Onghwa Village. Proud of his virility and father to three healthy boys, he dreams of having a daughter who inherits his wife Shin Ae's features. Upon discovering they are expecting another boy, Ja Wang is shaken, especially when Shin Ae suggests he get a vasectomy. Simultaneously, his childhood friend Deok Sam starts eyeing his position as village chief, leaving Ja Wang in a challenging situation, much like the neighbor's dog about to be neutered.
Choi Eun-seol is a young, married and cheerful woman who works as a researcher at a cosmetics company. Her husband betrays her but with the help of family, she learns to rediscover love and her happiness.