overview
professor yun's wife gave birth to another little girl. 3-year-old junxi (played by song seung-heon) and her father mischievously changed their sister to the baby in the cradle next to them when they visited their mother and sister in the hospital. a misunderstanding broke out. aaa。 fourteen years have passed, and junxi has grown into a handsome boy. her sister eun-hee (played by song hye-kyo) is also very smart and cute. her superior family background makes the two brothers and sisters an enviable object in the school. xinai (played by han caiying), who is in the same class as eun-hee, dies because her father is young, but her brother is idle. the whole family lives by relying on the restaurant independently supported by her mother, and life is difficult. xinai has always been very jealous of eunhee. one day, she deliberately took revenge on eunhee and was discovered by junhee. eunhee didn't want to make things big and rushed to stop her brother and xinai's theory, and was hit by a truck. in the hospital, eun-hee, who continued to transfusion, was found to be not the biological daughter of professor yun and his wife. after investigation, it turned out that xinai was professor yun's biological daughter. xinai learned this secret and came to yun's family to recognize his biological parents. although her adoptive mother jingha was reluctant to let go, in order not to make her mother difficult, eun-hee returned to the difficult home of xinai, and thus began her other life...
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