The border is treacherous, and the dissident guards are plotting to divide and rebel! After the battle of Shule, Geng Gong (Xie Miao) was ordered to patrol the western region with his 13 generals and was sacked and killed by bandits near Mengcheng. The story begins with the death of Geng Gong.

Xuan is a young man working in the film industry in Beijing. To make a documentary film that he wants to present at international festivals, he decides to take advantage of the holidays of the Day of the Dead to return to Chengdu, his hometown located at the other end of the country. The documentary he is about to make is about his relationship with his own lover. He leaves for Chengdu, accompanied by another man, Bo, the cameraman of the film. The two men take the train to Chengdu where Hong, Xuan's lover, is waiting for them. From the first moment of their arrival at the station, Xuan and Bo begin to turn with their camera, Xuan having already explained to Bo what he wanted to film and that Hong would always be "playing", Bo then trusting in Xuan. But Hong is more and more opposed to this camera and the presence of Bo.