I love you, willing to travel thousands of miles, I miss you, set off immediately. The movie is adapted from Chi Zijian's novel "Walking on the Moonlight Andante" and tells the story of a newlywed couple, Lin Xiushan (played by Zhang Zifeng) and Wang Rui (played by Hu Xianxu), who live in different places due to work and it is very difficult to meet. A surprising holiday arrived, and they embarked on a two-way journey of pure love. The train was traveling in the darkness, and the two eagerly awaited the dawn. On the way, they met various passengers, witnessed the ups and downs of life, and also experienced the true meaning of love. After a tiring day, when the moon was high, did they fulfill their small wish?