The Flower in Prison Season 1 Episode 6

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.