The film tells four stories about Tsinghua people's life choices on campus in Tsinghua. Among them are the first generation of "00" college students who just passed the college entrance examination and were admitted to their favorite universities, doctoral graduates who left the ivory tower and faced life choices, young teachers who returned to work in Tsinghua from the United States and were full of "seeing the sky" ideals but full of challenges, and old academicians who still stood on the three-foot platform after retirement. Among them, the doctoral student facing life choices is Song, the current deputy secretary of the Party Committee and mayor of Mengzhuang Town.