When Gu Yu was 13 years old, her only relative, her grandmother, passed away. A man claiming to be her uncle came to Xingyu Village and took her away. Nan Ting said that from now on, he would take care of her. Nan Ting took her back to H City and asked her to temporarily stay at the home of his senior sister, Xu Xiaoqing. And he himself was dealing with his family, trying to get his parents to recognize this little girl. But Nan's father and mother had no other feelings for this little girl except resentment. Nan Ting was helpless and eventually fell out with her family. Nan Ting took Gu Yu to her side and decided to take care of her personally. As Gu Yu grows up, his dependence on Nan Ting is obvious.
Unfortunately, because Nan Ting was ill, this secret was discovered by Nan's mother who came to visit her. Nan's mother made a deal with Nan Ting, and Nan Ting finally compromised and dated the girl arranged by her parents, while Gu Yu was also accepted by Nan's father and Nan's mother. However, Gu Yu was not willing to give in. After several times of sabotage to no avail, on the day she turned 18, she went out to get drunk. While drunk, she confessed to Nan Ting. Nan Ting was shocked and angry, and decided to send Gu Yu abroad as soon as she graduated.
Gu Yu stayed in San Francisco for four years, and he did not allow her to return to China. However, Gu Yu's relationship with Xu Xiaoqing gradually improved, and she learned from her that Nan Ting had broken up with her. Four years have also made her deeply aware that there is no room for a third party between her and him. She cannot change the reality between them, but she is determined to stay with him. So she made a decision. She went to the hospital for artificial insemination surgery, and then returned to China on the occasion of Xu Xiaoqing's wedding. Nan Ting wanted to drive her back to San Francisco to continue her studies, only to find out that she was pregnant. He thought that she had forgotten him in the past four years and was pregnant with someone else's child, and was deceived. When Nan's father and mother learned that Gu Yu was pregnant, a new wave of turmoil arose. Nan Ting kept her by his side and took good care of her. They have been living happily.
In the past few years, Nan Ting has started his career. When he attended a cocktail party and lacked a female companion, Gu Yu accompanied him there, not wanting to meet Nan Ting's ex-girlfriend. Back then, she had held a grudge against Gu Yu and tricked her into making her look embarrassed, but she didn't want her to be pregnant. The ambulance transported Guyu to the hospital, and Nan's father and mother also arrived. Guyu was bleeding heavily and the blood bank was in emergency, so Nanting had to donate his own blood. The blood types naturally didn't match. It happened that the doctor was a witness in Nanting's previous lawsuit. He did a DNA test in private and informed him of the results after much hesitation. It turns out that Guyu is not a flesh and blood of the Nan family. Later, Gu Yu found his mother's diary at her grandmother's house. It turned out that Gu Qingqing was really pregnant, but the child was miscarried due to family pressure. Later, they went to the orphanage to adopt Gu Yu. After losing her child, Gu Yu returned to Xingyu Village. Before leaving, she said to Nan Ting, I will wait for you to figure it out and wait for you to come to me.