A Seoul unknown revolves around the journey of the two twin sisters Yoo Mi Ji and Yoo Mi Rae (Park Bo Young plays the two roles). Thanks to that, they know many hidden corners of each other and understand better when looking at the world and life from the perspective of others.
After 6 episodes, Mi Ji and Mi Rae's journey to "change roles" is gradually discovered by close people, such as their grandmother and high school friends - Ho Su (Jinyoung), Gyeong Gu and Ji Yoon.
In addition to worrying about how Mi Ji and Mi Rae will have to face having to return to being themselves, the future of the twin couple is a factor that receives the attention of the audience, when they now understand each other's difficulties better.
She is a bright, lively Mi Ji but has gone through 3 years of depression and cannot leave home. As a good Mi Rae, understanding and always quiet.
Once close sisters, ready to "change roles" to help each other, but after Mi Ji's high school shock, the two gradually became distant. Living in each other's circumstances helps them gradually heal and relieve their past problems.
In addition, the story of the two sisters' relationship is also a highlight in the second half of the film. While Ho Su and Mi Ji are clearly aware of their feelings - when they are both each other's first loves, and are still in a committed relationship with each other, the couple Se Jin (Ryu Kyung Soo) and Mi Rae are also gradually developing a romantic relationship.
The scene where Mi Rae decides to help Se Jin on a stormy night and stay at his house opens a new turning point in their relationship, even though Mi Rae had previously decided to quit her job at the mulberry farm due to rumors related to both.
In the trailer for episode 7 (aired on the evening of June 14), revealed by the producer, it can be seen that the four of Ho Su - Mi Ji and Se Jin - Mi Rae will have a surprise encounter. The initiative of housewife Se Jin and lively girl Mi Ji promises to make the meeting comfortable and less awkward.
Also in the last 6 episodes of the film, the audience hopes to soon understand the mystery behind the character of poet and restaurant owner Rosa - who was revealed to not be able to read. Previously, the photo that lawyer Lee Chung Gu gave Mi Ji also showed a different past of Ms. Ro Sa compared to what Mi Ji heard.
In addition, the past of the farm owner Han Se Jin, the reaction of Ok Hee - Mi Ji and Mi Rae's mother when knowing the pain that the two children have to go through are also expected to bring many emotions.
