Lin Yi (Lin Gengxin), a young man who has successfully established himself in the United States, received a wedding invitation from his first love girlfriend Zhou Xiaozhi (Zhou Dongyu). With mixed feelings, Lin Yi was ready to return to China to attend. On the way on the plane, he recalled the story of himself and Zhou Xiaozhi for more than ten years. When the young Lin Yi first saw his deskmate Zhou Xiaozhi (Zhang Zifeng), he fell in love with this quiet girl, but they did not develop further until they graduated from high school. In college, the two were admitted to the same school and met Tom (Sui Kai), a fake overseas student, Wilde (Wang Xiaokun), a literary youth, Gong Bing (Gong Geer), a fat student, Li Xiao (Li Mincheng), a timid girl Zhao Xiaoxi (Zhao Siyuan) and a beautiful girl Cao Yang (Cao Yang), and then began their passionate youth... This film is based on the popular campus song "My Deskmate" created by Gao Xiaosong, and Gao Xiaosong served as the producer of this film.