Lu Wantang, 34 years old, is a photo editor in a magazine. He is used to wandering around the city alone at night, using his camera to record things that are about to disappear. When she learned that Metro Line 1, which had been in operation for more than 30 years, was about to be shut down and renovated, she started taking the last train every night to take photos of this old line that carries the memories of countless people.
On the last subway train, she met a strange man. Gu Pingsheng, 39 years old, appears on the same last bus on time every night, looking out the window at each stop, as if looking for something. Later she learned that he had been waiting on this line for five years - waiting for a girl who was separated twenty years ago, waiting for a word that was too late to say.
Two people with their own pasts meet on a subway line that is about to disappear. She used her camera to record the dusk in the city, and he used his footsteps to measure the thickness of time. When the waiting has results, when the old things disappear, a new beginning comes quietly.
This is a story about "waiting" - waiting for someone, waiting for an answer, waiting for time to give the ending, and waiting for yourself to learn to move forward.
