In order to join a top-secret national scientific research project, Chu Xiaoyu, a talented scientific research boy, and Lin Qingxue, who had a crush on each other in high school, left without saying goodbye. Since then, there has been no news, and Lin Qingxue mistakenly thought that she died unexpectedly. Three years later, Chu Xiaoyu successfully completed the scientific research task. In order to make up for the regrets of his youth, he gave up the opportunity of being a professor at Tsinghua University and was admitted to Kyoto University where Lin Qingxue was studying as a freshman. A reunion spanning three years began.
