The film tells the story of Fei Ge (played by Li Jiawen), who lives in the old family building of the steel factory and makes a living by singing on the street. He takes care of his introverted and quiet son Liu Di (played by Han Haolin) alone. Since Fei Ge has no marriage history, Liu Di's household registration can only be registered under the name of his cousin. When Liu Di was seven years old, Fei Ge found out that he was in the late stage of cancer. In order to let Liu Di live a worry-free life after his death, he decided to give Liu Di to his cousin who had been married for many years and had no children to adopt. The two agreed on a date, when the cousin would take Liu Di away to live abroad. The countdown to the separation of father and son is also the countdown of Fei Ge's life.