At the age of thirty, Su Ran finally admitted that he was ill. Since the age of sixteen, she has had the same dream repeatedly: During the Republic of China in Jiangnan, she was a woman selling paintings on a bridge, and a scholar came to see her every day. Later he went to join the army and said he would come back. She waited in her dream all her life, waiting until she died. For fourteen years, she refused all real feelings because of this dream. Until I reported to the Aerospace Academy on the first day, the elevator door opened - the person standing inside was exactly the same as the scholar in the dream. Just twenty years older. He just looked at her like a stranger. He is Lin Yuan, forty years old, an academician of the Academy of Aeronautics and Astronautics, and has been studying the "Flying House Project" for twenty years. Everyone laughed at him for being obsessed. No one knew that there was a painting hidden in the archives of his office - exactly the same as the "Flying House" she gave to the scholar in her dream. The person in the dream is standing in front of me. But she didn't dare to admit it. He didn't acknowledge her either. One has been waiting for sixty years, and the other has just enlightened. This is not a love at first sight story. Two highly intelligent adults, caught between reality and fate, slowly confirmed that the person in the dream really existed.