While on the run for his life, a young man discovers that the best place to lie low is in a village of widows — disguised as a woman.
Episode 1
Nok-Du, who is living on a small island, witnesses his father and brother get attacked by a group of assassins. He decides to leave home and find out who they are and work for. He follows the leads and arrives in Hanyang.
Episode 2
Nok-Du disguises as a woman and enters the village where only widows are allowed to live. Fortunately, no one is suspicious of Nok-Du yet. He finds out that there's a gisaeng house right next to the widow village.
Episode 3
At night, Nok-Du happens to overhear the conversation of a group of widows who look like trained assassins. Nok-Du starts to follow one of them into the woods. Meanwhile, Nok-Du's father and brother move from the island to the mainland. Yun-Jeo, Nok-Du's father, decides to go to Hanyang to take care of unfinished business.
Episode 4
Nok-Du and Dong-Ju become close. Nok-Du helps out Dong-Ju when she is having a hard time because of her injured hands. Dong-Ju says that she wants to treat Nok-Du like an older sister. Nok-Du happens to see a shaman and widows performing a religious ceremony, and he thinks that the widows are scheming something.
Episode 5
Dong-Ju realizes that Nok-Du has been pretending to be Lady Kim so far. Nok-Du persuades Dong-Ju to let him stay in the village. The widows talk about a man who sneaked into the village last night, and they plan to catch him by making a composite sketch of him. Nok-Du decides to give the widows misleading information about the man to confuse them.
Episode 6
Dong-Ju hears a rumor about the man who broke into the village the other day. She realizes that it is not a good idea to let Nok-Du stay in the village. She asks Nok-Du to leave the village. Meanwhile, Nok-Du finds out that a group of widows is planning to kill someone, and he makes a deal with the widows.
Episode 7
Nok-Du decides to help Dong-Ju so she doesn't have to be a gisaeng. Nok-Du gives up the mission that the widows of Muweol Corps gave him. He goes to meet Lady Cheon with an idea that can help Dong-Joo. Meanwhile, the widows of Muweol Corps agree to give Nok-Du the second chance and order him to complete another mission.
Episode 8
Dong-Ju keeps being reminded of her childhood and family after she came to Hanyang. She visits the house she used to live when she was a child. That's when she runs into Yul-Mu. And Nok-Du happens to watch them have a chat from afar. Nok-Du manages to complete his mission, but he hears that the real Lady Kim and her servant got caught.
Episode 9
Nok-Du returns to the village for widows with Dong-Ju and Yul-Mu after completing his mission in Hanyang. However, the widows and gisaengs in the village think that Nok-Du likes Yul-Mu. Meanwhile, Yun-Jeo and Hwang-Tae see that a group of assassins are in front of their place. They start to run away from the assassins.
Episode 10
Nok-Du is curious about who Dong-Ju likes. He asks her who it is, but she never tells him. Nok-Du decides to tell Dong-Ju his feelings for her, but Dong-Ju tries to keep her distance from Nok-Du.
Episode 11
Yul-Mu finds out that Nok-Du has been pretending to be a woman all this time and that Dong-Ju has been looking out for Nok-Du. Yul-Mu wants to know if Dong-Ju has feelings for Nok-Du. And Nok-Du tells Dong-Ju that he will make her fall in love with him.
Episode 12
After the widows of Muweol Corps left for Hanyang to kill the local functionary, Nok-Du and Lady Cheon find out that the widows are in a trap. Lady Cheon asks Nok-Du to go help out the widows, and that's how Nok-Du becomes a member of Muweol Corps.
Episode 13
Heo Yun and his fellows think that the King might have noticed about their plan, so Heo Yun orders the widows of Muweol Corps to move their base. And Heo Yun encounters Hwang-Tae. Meanwhile, Nok-Du happens to overhear the conversation between Dong-Ju and Yul-Mu, and finds out that Dong-Ju is planning to leave.
Episode 14
Nok-Du meets Hwang-Tae at Yul-Mu's house. Nok-Du insists that he and Hwang-Tae should hurry and leave the place, but Hwang-Tae refuses. Instead, Hwang-Tae tells Nok-Du a big secret.
Episode 15
Because of the attack by Yul-Mu's underlings, the village for widows is destroyed and many widows get injured or killed. Nok-Du risks his life and helps the widows without disguising himself.
Episode 16
In Hanyang, Dong-Ju is trying to get a job in the palace by bribing court ladies. One day, a court lady asks Dong-Ju to find a man for her. Dong-Ju manages to find a man who matches the description. Meanwhile, Nok-Du visits Heo Yun again. Heo Yun takes Nok-Du to the room where Yun-Jeo is staying.