He Qiaoqiao (Bai Baihe), whose parents passed away, received extra care from her classmate Li Xing (Eddie Peng), and the two gradually became a pair of childhood sweethearts. On the eve of graduation, Li Xing proposed to Qiaoqiao, but she refused cruelly on the grounds that "the material conditions she wanted were not met". Under this premise, the two parties made a contract with each other that "if they are single in five years, they will get married". Qiaoqiao left for Shanghai, while Li Xing, whose self-esteem was frustrated, stayed in Beijing to work hard. Five years later, Qiaoqiao thought that the infatuated man Li Xing still remembered the promise of the year and the two could renew their relationship. Unexpectedly, she learned that Li Xing was going to marry Zhou Rui (Pace Wu), a white, rich and beautiful woman who grew up in France. Qiaoqiao, who was hit hard and unwilling to give up, had no choice but to ask for help from "invincible gay friend" Maomao (Jiang Jinfu), and prepared to join forces to win Li Xing back again. Is there still room for maneuver in the relationship between Li Xing and Qiaoqiao after five years?