Yoon-hye likes Da-joo more than just as a friend but denies her feelings for the sake of their friendship. After some events following Da-joo being introduced to a boy, Yoon-hye is not able to hide her emotions anymore.
In the turbulent Joseon dynasty, army commander Min-jae watches ambitious Prince Yi Bang-won while becoming entwined with Ga-hee, a vengeful gisaeng. Fate collides as power shifts.
Two spies share a secret bond, despite their loyalties. A North Korean assassin is sent to Seoul to kill a dissident, but instead he teams up with a South Korean agent in search for revenge.