Lin Mengli, a taciturn rich girl, has not been good at speech and communication since she was a child, but she likes high-rise buildings, feasting, and accompanying her father to work and socialize, even though she is now 15 years old. She doesn't like to laugh, but she likes to see others smile. She feels that those smiles are her happiness. Until one day she met that smile in the heavy rain, and she began to walk on a road that was not hers. From stranger to stranger and still stranger, she and he had three stages of life, but they never started. Looking at each other, touching each other, even if their skins blended together, they were still just strangers. She has everything, but she has never had his smile. Her happiness has disappeared from the beginning, just because of him——Gu Jianli