After moving, Lin Zhaozhao grows curious about her mysterious next-door neighbor, whom she has never met. Her curiosity leads to an unexpected encounter late one night when she finds Lin Xingye collapsed by the elevator. After taking him to the hospital for emergency treatment, the two finally meet properly. He is a novelist who lost his voice in a childhood accident, a gentle and reserved man who communicates only through sign language. She is an energetic young woman studying special education who eagerly steps into his quiet world. From caring for each other as neighbors to falling for one another, their everyday moments are filled with a quiet, special affection.