Violinist Liu Zhikang (Takeshi Kaneshiro) and translator Cai Jiayi (Gigi Leung) live in rooms separated by only a wall. However, they always go left and right at the same time and place, so they have never met. One day, they finally meet at one end of a pool because they come to the same park. They hit it off right away. A happy and sweet afternoon passed quickly. It was almost dusk when a downpour came. The two exchanged phone numbers when they hurriedly parted. Unexpectedly, when they got home, they found that the paper with the number had been wetted by the rain and blurred. In order to prevent Liu Zhikang and Cai Jiayi from meeting again in this life, Xiaohong and Dr. Hu, who have a crush on them, came up with a trick. In addition, the park where the two met was being demolished, so they began to believe that there was really no fate between them.