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.
as Su-cheol
as Yeo-gyeong
as Gyeong-bin
as Seung-ri / Yu-gyeong
as Chan-mi
as Young-sook
as Haeng-ja
as Seo
as Jung-ok
as Nam-gyeong
as Tae-sung
as Bo-ra
as Hak-su
