Su Nianjin, who is proficient in medical skills, accidentally came to the Yan Dynasty in another world during a mission. The former prince Xiao Muyuan became anonymous and fell into the streets when the country was destroyed. He and Su Nianjin, who had become a child, lived by stealing. At the age of fifteen, Su Nianjin was selected as a spy by Xiao Muyuan without knowing it, and was arranged to steal information from Prince Yirui's palace. In the palace, she accidentally met Xia Zhiyi, a woman who also came to the Yan Dynasty. Su Nianjin is thoughtful and cautious, and only wants to rescue his childhood sweetheart. Xia Zhiyi, on the other hand, has avant-garde concepts and an open mind, and likes to make friends with different men. There are intrigues in the palace and turmoil in the court...
