After losing her parents in a tragic accident, Zhuo Yifeng suppresses her past through selective amnesia and takes on a new identity as Su Nianfeng. Raised by her parents' friend alongside his son, Su Muyun, she struggles with an uneasy sibling-like relationship. As she navigates high school, Su Nianfeng finds inspiration in her close friend Yue Diyin, whose warmth and resilience motivate her to pursue a career in medicine despite his battle with a mysterious illness.