Lin Wei, a bookstore owner in an old alley in Jiangnan, lives a peaceful life guarding the "Shiguang" bookstore left behind by her grandmother. She hides her yearning for art but dares not take a step forward. Shen Yu, an architect who returned from China, came here because she was responsible for the renovation project of the old city. She is calm and sharp, and is used to wrapping her heart around her work. An unexpected encounter on a rainy day brought two people from completely different worlds together. The controversy over the reconstruction of the old alley, the tangle of past memories, and the collision and attraction of personalities made them "glimmers" in each other's lives - Lin Wei's softness melted Shen Yu's alienation, and Shen Yu's firmness awakened Lin Wei's courage. The two work hand in hand to protect the warmth of the old alley, and also find their own direction in life in being together, and finally let the glimmer of light converge into a light that illuminates each other.
