Before traveling through time, Song Shiyu was the beloved daughter of a prestigious medical family, learning medicine from her grandfather. As a child, she was kidnapped, and during the kidnapping, she mysteriously traveled to the era of the male lead, Gu Hanyu, where she saved him from a severe injury. Afterward, she returned to her original time and lost all memories of her time-traveling experience. Song Shiyu and Gu Hongyu traveled together due to a jade pendant—Song Shiyu became the Princess of Xiang, while Gu Hongyu became the Emperor's legitimate son. Both Gu Hanyu and Gu Hongyu were princes and rivals, each fighting for the throne. During the struggle for succession, Gu Hanyu repeatedly injured himself on purpose, seeking sympathy from Song Shiyu, and she gradually began to open her heart to him. Eventually, she helped Gu Hanyu in his bid to take the throne.
