Ning Yuanran, who comes from a single-parent family, lives with her gentle and quiet mother. Her father cruelly left both mother and daughter when she was 6 years old, abandoning her wife and son. Yuan Ran is weak on the outside but strong and resolute on the inside. He has only one friend, Ruan Qing. The peaceful life was broken by a glance by the window on a rainy day at the age of 16. From then on, Xia Qianxuan, with warm eyes, entered the distant world. His first love was beautiful but full of pain. Qianxuan was sent by his parents to study in high school in the United States on the other side of the ocean and was preparing to apply for college. From now on, the world is far apart. Four years later, the two met at the senior pep rally of junior students at their alma mater, and a relationship was evoked again, or in other words, it has never been extinguished...