As time goes by, the once beautiful youth is like an unreal dream. She is full of restlessness, joy, sadness and indignation. She is a young and ignorant person who is far away from the intrigues of social reality. The most dazzling colors are painted with silly innocence. Now looking back on the past, even if it is as illusory as a dream, it makes people sigh and feel a lot of emotion. Just because of a chance, Chen Xun (played by Peng Yuyan), who has already passed his thirties, recalled the name that he had called thousands of times. In the distant student days, Chen Xun walked on the dusty campus with Fang Hui (played by Ni Ni), a girl who made his heart beat, as well as Qiao Ran (played by Wei Chen), Lin Jiamo (played by Zhang Zixuan), Zhao Ye (played by Zheng Kai) and other general best friends. Friendship and love grow freely like weeds in the era of many taboos. Once that was everything they insisted on, and all of these were crushed to pieces. Do you still remember the oath you made? This film is adapted from Jiu Ye Hui's novel of the same name.