On the dark side of the world, there is a pawn shop that pawns joys and sorrows. What is traded here is not gold and silver, but rather specific sentiments such as currencies. Joy is bright yellow and valuable, while melancholy is light blue and is cheap and easy to get. Lin Qiushi was born with the ability to see the color and weight of emotions, but this talent made him a prisoner of emotions. He numbly assessed the sorrows and joys of his guests, until one winter day, a girl who had pawned all her fears but still smiled walked in. Deep in her empty emotional pocket, there was a ray of blazing gold that he had never seen before. This color was exactly the same as the color he remembered the night his mother disappeared. The rules of the pawn shop began to collapse, and Lin Qiushi knew that he had to redeem something, not just emotions.