Three ice men who are known as the best matchmakers in the world: "Golden Magpie Bridge" - Quan Jiafu (played by Ma Junwei), "Golden Sunflower Fan" - Lian Baihe (played by Maggie Cheung), and official matchmaker Linghu Xi (played by Gai Minghui) have the opportunity to get together, because the famous Lin family in Chang'an is recruiting a son-in-law, and Gao Pei (played by Chen Hao), a superb detective from a noble family, has become the object of their competition. Linghu Xi originally thought that his chances of success would increase greatly if he met Gao Pei. But it turned out that Gao Pei already had someone in his heart, and the object was Linghu Xi who was disguised as a man. For the sake of his family, Linghu Xi was afraid of committing the crime of deceiving the emperor, so he had to keep his feelings to himself. As for Jiafu and Baihe, after a fight, they decided to open a large ice man museum called "One Line". Unexpectedly, on the opening day, a secret related to the happiness of both parties was discovered...