One morning, the female protagonist Fang Xiaoman was walking her dog on the streets of New York. By chance, she met the male protagonist Xue Ran who was rushing to work. Xue Ran suddenly discovered that Fang Xiaoman looked very similar to his first girlfriend Wu Yu, and became curious. Later, he met Fang at a party, so he became interested and started pursuing her, and the two gradually fell in love. After that, Xue took Fang to a family gathering, and unexpectedly met Zhou Zhiru, the wife of her ex-boyfriend Mike. Zhou thought that Fang was doing it intentionally and wanted revenge. Xue also learned about Fang's past, and the other party was shaken. Fang was so angry that he packed up and flew back to China. Xue Ran felt lost and sad since then, only to realize how important Fang was to him. Fang decided to return to China to retrieve Fang, and Fang's friend Zhou Jiajia and Xue's friend Sun Jin kept bringing Fang and Xue together, and gradually drew closer to each other. At this time, Fang Xiaoman also began to re-examine everything, and decided to let go of the past and start over. Just when Xue decided to propose to Fang Xiaoman, Xue's childhood sweetheart Wu Yu suddenly appeared...