In the flashy city, some people only long for a ray of light that will appear at any time. Brother Narrow (played by Zhang Jicong), who runs a cleaning company alone, faces the outbreak of the epidemic and the depression of all industries. He meets Candy (played by Yuan Lilin), an unemployed young single mother who comes to apply for a job. Candy, who seems to be doing nothing, can solve Brother Narrow's difficulties at work. Just when the two thought that life was getting better and the epidemic had become a part of their lives, the cleaning company was complained about, and Brother Narrow's family suffered a major change. Although people are like dust, they can also meet someone to snuggle with on a narrow road...