The female protagonist, Yun Ruoyue, as a modern doctor, is electrocuted in the process of saving lives and traveled to ancient times, using her own medical system to practice medicine and cure illnesses. She is granted to marry the Crown Prince of the former dynasty, Lord Li. The two of them, one treating illnesses and saving lives, the other protecting the people, go from disliking each other to gradually admiring each other, and then to working together, falling in love, and redeeming each other.