Su Xiaonan, Yan Dongyang, and Xia Yuting are three good friends living in a big city.
Su Xiaonan, a 28-year-old leftover girl, followed the trend and joined the blind date team. However, because she exchanged mobile phones with Yan Dongyang, she fell in love with Lu, who had just returned to China.
Haoxuan meets. Lu Haoxuan is Yan Dongyang's brother when he was studying abroad. As the heir to the family business, he claims that returning to China is necessary for the family business, but secretly he hides unknown secrets. With the help of Yan Dongyang, Lu Haoxuan and Su Xiaonan became friends. He accompanied her through the most disappointing period, whether it was work or life. He protects her with all his heart, but she only sees him as her best friend. At the thirtieth birthday party he prepared for her, he was disheartened when she chose to leave with her college crush. When Su Xiaonan finally understood who she really loved, Lu Haoxuan already had someone else by her side. . . . . . .
Yan Dongyang was Su Xiaonan's childhood friend. When he was young, Yan Dongyang was Su Xiaonan's most considerate brother. After high school, Yan Dongyang went abroad to study and came back again, but he became a beautiful young man in the game world. Xia Yuting is Su Xiaonan's roommate at the university. She grew up in a single-parent family and is independent and strong. She has never been on good terms with Yan Dongyang, but she fell in love with him because of his sexual intercourse during his low period. . . . .