After quitting her job with zero notice, Su Nian comes to work the night shift at a convenience store to escape workplace burnout and heal her inner confusion. Every late night, anonymous handwritten notes always appear at the cash register, their gentle words quietly comforting her loneliness. She secretly writes back, forming a silent text communication with the mysterious person. Gossip follows one after another, and this goodwill is unexpectedly interrupted, leaving Su Nian full of disappointment. In the rainy night, she takes the initiative to explore, uncovering that the note-leaver is Gu Huai'an, an elderly person living alone. The two clear up their misunderstanding, changing from anonymous pen-and-paper correspondence to real-life companionship. The elder and the youth comfort one another, completing a two-way healing across generations under the warm lights of the convenience store.