At Tsinghua University's campus, four people are standing at the intersection of their lives. Among them, there are those who just passed the college entrance examination, the first-generation of post-00 college students who entered their favorite universities with twists and turns , some are leaving their ivory towers, PhD graduates facing difficult choices and some have returned from the United States to enter Tsinghua University. Young teachers are full of "viewing the sky" ideal but face challenges, there are old academicians who still stand behind lectern after their retirement. The film tells the life ideals of the four Tsinghua people and the eternal youth that belongs to this university behind them.