In the boundless time, we are all passers-by; in the long and quiet years, we all need companionship. Nan Sheng, who went to a big city to work alone in pursuit of a free life, never thought that she would meet Huai Yi again. However, fate is so mysterious, and she reunited with her sweetheart by chance. After experiencing real factors and emotional conflicts, the two gradually matured and began to realize that the other person was always rare in their lives.