Nine years ago, the "love letter incident" brought Song Yanqi and Han Dongming together. It was also because of that love letter that Song Yanqi made mistakes in school and was forced to transfer. Nine years later, Song Yanqi, who became a lawyer, met Han Dongming again. At this time, Song Yanqi, who was in debt, lived with his mentally retarded brother. The busy work made his life lose its color. The relationship that was strangled before it sprouted when they were young quickly grew amidst the emotions after meeting again, making them cherish each other even more. Love makes two lonely souls feel warm, and Han Dongming becomes the bright light in Song Yanqi's dark life.