I love you, I am willing to travel thousands of miles, I miss you, I will leave immediately. The film is adapted from Chi Zijian's novel "Andante in the Moonlight", which tells the story of a newlywed loving couple Lin Xiushan (played by Zhang Zifeng) and Wang Rui (played by Hu Xianxu). They are separated by work and it is very difficult for them to meet. A surprise vacation comes, and they embark on a two-way pure love journey. The train runs in the dark, and the two are happily looking forward to the dawn. On the way, they met all kinds of passengers, witnessed all kinds of life, and also appreciated the true meaning of love. After a tiring day, when the moon is high, have they realized their little wishes?