The thin wall of the old rental house separates two ordinary people who don't know each other.
Xia Wan, a gallery clerk, lives an ordinary and stable life. She is used to dealing with all the trivial matters in life alone. Unexpectedly, an accident causes her to bump into her neighbor Lu Xun, who is always in a hurry and has short hair next door.
Lu Xun is an architectural designer. He is calm and taciturn. He seems to be able to handle everything by himself, but he hides fatigue and worries that are not easily revealed to others.
Starting from an accidental conversation in the corridor, the evening breeze passed through the two facing windows, and the two people who were originally parallel lines slowly approached each other.
Intent: The secular love of ordinary people