When his father was critically ill, Wang Huajun, who hadn't returned home for a long time, rushed to Xiangyang. On the high speed train, Wang Huajun had a dream, the emotional story of water and fire between father and son, and the impulsive and repressed youthful time, one scene after another reappeared. Farewell to his father, accompanied by his mother to take a break from the day, Wang Huajun attended a classmate reunion, after a gap of 18 years, classmates and the whole city of the great changes that occurred, to Wang Huajun caused a strong impact. He developed a sense of fantasy and felt like a foreign guest.