Xia Aiyu has lived in the United States alone for three years, and has been in a foreign relationship with her childhood sweetheart Qi Yu for so many years. When Xia Aiyu believed that her emotional world was so stable and peaceful, such a person appeared - Xuanyuan Mo. When he smiled, the whole world seemed to warm up. His voice sounded as good as if it had been kissed by God. His world is so warm, so warm that I want to hold on to it and never let go. But when she entered his world and had to face some difficult difficulties, Xia Aiyu hesitated. But she had to decide to return to China because of her deteriorating physical condition. Qi Yu, the boy who had always doted on her, suddenly lost news. But after returning home. . . . Everything was so fast that Xia Aiyu was caught off guard.