When she was seven years old, Shen Zhixing held Lin Xinglan's hand for the first time outside the sterile room. From then on, her route had its own navigation tower. From campus to marriage, from Beijing to Iceland, he wrote "Waiting for you to grow up" into the long years, and she carved "Take off for you" into the sky ten thousand meters high. When the captain's uniform meets the doctor's white robe, when the cherry blossoms fall into the night lights, a "premature love" stamped by time finally takes off. Later, she flew a passenger plane through the aurora, and he held his daughter and waited for her under the clouds - it turned out that the so-called rest of his life was to fly his twenty-one-year heartbeat into a track cloud that would never expire.