When you’re young, you don’t know what love is. Only with time do you learn. Two childhood sweethearts who were like playful rivals are separated by thousands of miles after an accident. Ten years later, they meet again, and everything is different. A new story begins between them. Chen Shanhao becomes a school celebrity, a top student as well as the school bully. Hu Jingru, because of her personality, is an obscure little flower at school. A sudden accident brings them together. He enjoys picking on her, while she brings him a ray of light that was never meant for him. She makes it her mission to hate him, yet at the same time, she changes because of him. Another sudden accident creates a rift between their families, slowly driving the childhood sweethearts apart. During the ten years they spend without seeing each other, she forgets him. So when they meet again a decade later, he is overjoyed while she is indifferent. He becomes her attending physician and looks after her daily needs, only to discover that she has forgotten the person he used to be. Otherwise, how could she have let him get so close so easily? He spends a year by her side under the pretense of being her doctor before finally winning her back. Only later does she learn that they had once known each other so well...