Medical school couple Gu Yanchen and Su Qinghan support each other on campus. Gu Yanchen got the internship qualification of the city hospital through hard work, and the two made a promise for the future. Rich girl Lin Weiyu carefully planned a medical accident, which resulted in Gu Yanchen being fired. A misunderstanding about a breakup on a rainy night, the awakening of the system and the beginning of the boy's darkening. Gu Yanchen, who obtained the "Eye of Truth", first showed his talents in hospital emergency treatment, while Su Qinghan secretly traced evidence to uncover the truth of the conspiracy. Gu Yanchen, who has become a legend in the industry, reunited with Su Qinghan at a high-profile medical summit. The former aloof school beauty transformed into a persistent pursuit of her lover. Through the case of curing children with ALS, the two re-recognized each other during life and death treatment and planted the seeds of emotional recovery.
