The film is adapted from Zheng Zhi's original novel "Wang Jinjin I Lost Twice". In the summer of 2010, Bai Xiaoyu (Tan Jianci) met Wang Jinjin (Zhang Jingyi) for the first time in the college entrance examination and "lost" her. Four years later, they met again unexpectedly in the job-seeking crowd during graduation season and fell in love. In 2018, they hesitated at the door of marriage after knowing each other for eight years and loving each other for five years. They love each other but cannot escape the many fetters of reality. Will Bai Xiaoyu lose Wang Jinjin again...