Gu Yebai (played by Chen Ruoxuan) is a recognized talented painter, but because of a dark past, he suffered from traumatic stress disorder, which caused him to lose his sense of color and live in a world of black and white. Gu Yebai is preparing to participate in an international art competition, and this accident is tantamount to a fatal blow to him. When Gu Yebai was most desperate, a girl named Lu Youyan (played by An Yuexi) appeared by his side, accompanied and encouraged him to finally fulfill his dream, and the two lonely hearts got closer and closer in the process. Finally, after several twists and turns, Gu Yebai and Lu Youyan finally spoke frankly to each other, but at this juncture, Lu Youyan got an opportunity to study in Paris, and the lovers will be separated again. At the same time, the news that Lu Youyan's cousin was critically ill was another huge blow.