While making a delivery, food delivery rider Chen Luo finds an unusual, anonymous duty roster and mistakenly assumes that some residents are privately occupying shared spaces. Determined to investigate, he begins making inquiries throughout the building. Lights left on in the early hours and notes posted outside apartment doors lead to one misunderstanding after another. Only after communicating with everyone involved does he discover that the roster is actually a neighbor-organized mutual assistance arrangement. Once focused solely on rushing through orders, Chen Luo gradually learns to slow down and understand the difficulties others face. He begins actively participating in community support, bringing a little more warmth and kindness to the busy corridors of the apartment building.