Chen Chuan descends from the mountains and enters the city with only one purpose: to fulfill a marriage agreement and end his engagement with a fiancée he has never met. Unexpectedly, just after arriving in Jiangcheng, he gets caught up in a crisis involving the Gu family and saves Gu Nanqiao at a critical moment. Two people who originally had nothing to do with each other become connected through this unexpected incident. As the secrets the Gu family has concealed for years gradually come to light, Chen Chuan relies on his inherited medical skills and extraordinary intelligence to resolve one crisis after another, leading Gu Nanqiao to see this seemingly ordinary man in a new light.