1. In the first episode, two babies were born in the maternity ward on the same day, but their identity tags were changed because of one child, Yin Junxi. The two babies started two completely different lives. The baby who was originally a rich boy went to a single mother's house, and another baby born in a single mother's house went to a rich and happy family and grew up happily. The story began here! The two babies who were transferred lived in two completely different families for 14 years, but because of a traffic accident of Yin, Professor Yin learned that her daughter who had been raised for 14 years was different from her blood type. After tracing, he realized that the two babies born on the same day were turned around because of the mistake of the maternity hospital, but after consulting with Mrs. Yin, he wanted to pretend that nothing had happened, but God couldn't help it.

2. In the second episode, Ai, the biological daughter of Professor Yin, lives a very difficult life in this single-parent family. When she learned that she was originally a rich girl, she decided to leave the single mother who raised herself 14 years and take refuge in the rich Professor Yin family.

In the third episode, Xin loves to be jealous of Yin, so she tries her best to make her lead a miserable life. Knowing that he was going back to his biological mother, Sean had to helplessly watch his favorite adoptive parents and brother immigrate to the United States.

4. In the fourth episode, as time goes by, Zheng Xi and Xin Ai return to their former birthplace, while Sean works as an operator in a hotel. Zheng Xi wants to get engaged, so he wants to find this sister Sean who has been worrying him, but he is always disappointed. On the other hand, Zheng Xi's good friend Han Taixi was arranged by his father to stay in a hotel under his own name because he was an illegitimate child. During this period, he met Sean, and because of this, Zheng Xi also had the opportunity to see Sean again.