The Flower in Prison

A pregnant woman is chased by a man who tries to kill her and the baby. Without knowing the details, Ji Chun Deuk, the treasurer of Jeonokseo happens to take care of the baby girl whose mother dies as soon as she gives birth to her. This girl grows up in the prison with the name Ok Nyeo.

Ok Nyeo is invited to tell Yoon Won Hyung and Jung Nan Jung’s fortune and receives silk clothes in return. On her way back to Jeonokseo, she gets kidnapped by Mount Daedeok bandits. They take her for Lord Yoon’s daughter and plan to save their leader who is due to be executed soon.

Ok Nyeo happens to help a female prisoner switch herself with someone else who would do anything for money. It turned out to be an old lady, and during their mission, Ok Nyeo hears about why she was born in Jeonokseo and how her mother died.

Although Ok Nyeo applied to become a warden at the Police Bureau, she fails because she's overqualified. While she’s thinking of becoming a spy instead, an envoy from Ming arrives and announces that he will have to get to the bottom of how and why the former king died.

Ok Nyeo is visited by the Chief of the Police Bureau and asked to decide if she wants to become a spy. She undergoes a series of training to become skillful enough to complete a mission. Meanwhile, Tae Won works towards his goal of taking revenge on Jung Nan Jung, and Queen Munjeong personally asks Tae Soo to accept her deal.

After passing the final test, Ok Nyeo officially becomes a spy. Kang Sun Ho assigns her a mission, which is to steal the letter from Oh Jang Hyun. On her mission, she encounters two people, Tae Soo and Tae Won. Tae Soo is surprised to find out she is in the same mission as him, and becomes worried about her safety.