Kim Nam Gil and Lee Yoo Mi are joining forces for an upcoming SBS drama that takes justice into the world of dreams. The two actors have officially confirmed their lead roles in the new sci-fi thriller “Nightmare,” a series about trapping villains who escape the law inside nightmares instead of prison cells.
The drama, which carries the working title “Nightmare” (literal translation), is scheduled to premiere in 2027 on SBS. Production is currently in pre-production stages, with casting now finalized after weeks of speculation.
What is ‘Nightmare’ About? A Unique Blend of Sci-Fi and Revenge
“Nightmare” follows a vigilante group that punishes criminals beyond the reach of the legal system. Instead of sending them to prison, they trap these wrongdoers inside nightmares. The story moves between dreams and reality, creating a world where justice takes on a completely new form.
The production team shared their vision for the series, saying, “By punishing criminals that are difficult to prosecute under real-world law within nightmares, we aim to deliver a sense of catharsis. The partnership between a detective and a nightmare designer will offer a new level of immersion.”
The drama is written by Kim Kyu-won and directed by Lee Dan, and will air on SBS.
Kim Nam Gil Transforms into a Dangerous Detective
Kim Nam Gil plays Detective Kim Tae Yi, an officer who returns to the Southern Police Station after completing a long undercover assignment. His personality, speech, and lifestyle have all changed during his time undercover, but one thing remains the same—his strong desire to catch criminals.
The character is described as more dangerous than gangsters, with sharp instincts and a wild charm. He teams up with the nightmare designers to hunt down villains using his animalistic senses.
Kim Nam Gil has built a reputation for handling dark roles and action-packed characters through previous works like “The Fiery Priest” series and “Through the Darkness.” Fans are eager to see how he brings this rough but determined detective to life.
Lee Yoo Mi Plays a Timid Officer with a Deadly Dream Alter Ego
Lee Yoo Mi takes on the role of Jang Gyu Eun, a police officer at the Southern District who focuses on supporting victims. In her everyday life, she is shy and timid. But inside dreams, she becomes an entirely different person.
Jang Gyu Eun serves as a “nightmare designer” who enters the dreams of criminals who have escaped punishment. Once inside, she inflicts terrible pain on them, wearing a cruel and decadent face that contrasts sharply with her real-life personality.
This role requires Lee Yoo Mi to show a striking duality, moving between a charming smile in reality and a lethal gaze inside nightmares. She has previously proven her ability to portray extreme human emotions in works like “Squid Game,” “All of Us Are Dead,” and “Strong Girl Nam-soon.”
Notably, Lee Yoo Mi made history as the first Korean actor to win an Emmy Award for Outstanding Guest Actress, adding to the anticipation surrounding her performance in this drama.
The Unique Partnership: Detective and Nightmare Designer
The core of “Nightmare” lies in the unusual partnership between Kim Tae Yi and Jang Gyu Eun. Together, they trap criminals who mock the law inside an inescapable prison of nightmares—a personal hell they cannot wake up from.
Instead of sending villains to real-world prisons, the duo locks them in dreams where they face eternal suffering. This approach delivers a fresh take on the crime-fighting genre, mixing fantasy elements with hard-hitting justice.
The production team expressed excitement about this collaboration, stating, “We look forward to the acting synergy of Kim Nam Gil and Lee Yoo Mi, who will immersively bring to life the special material of a detective and a nightmare designer working together.”
Early Story Details and Character Backgrounds
According to earlier reports from March 2026, when both actors were first considering their roles, the drama explores a world where technology can manipulate the human subconscious.
Jang Gyu Eun’s character carries the scars of a tragic childhood accident, which drives her relentless pursuit of revenge despite overcoming her traumatic past. This backstory adds emotional depth to her transformation into a nightmare designer.
Detective Kim Tae Yi, who lost his parents at a young age, fights criminals with a knife instead of a gun—making him a distinctive figure in the police force. His strong sense of justice, shaped by personal loss, fuels his partnership with Gyu Eun.
Fan Reactions to the Casting News
Viewers have shown strong interest in this pairing since the confirmation news broke on March 18, 2026. Many fans took to social media to share their excitement about the unique concept and the lead actors.
One fan reaction highlighted the appeal of the premise, saying, “This setup sounds so cathartic.” The idea of trapping villains in nightmares rather than prisons clearly resonates with audiences looking for fresh takes on the crime drama genre.
The combination of Kim Nam Gil’s proven track record in action-heavy roles and Lee Yoo Mi’s Emmy-winning acting skills has created significant buzz. Fans expect their on-screen chemistry to be a major highlight of the series.
Production Team and Network Details
SBS is producing “Nightmare” through its drama division, with a creative team committed to delivering a high-concept thriller. The network has previously aired successful crime and fantasy dramas, making this new project a natural addition to their lineup.
The production team emphasized their goal with the series: “Through the unique setting of condemning large-scale criminals, who cannot be imprisoned by reality’s justice system, through ‘nightmares,’ we aim to sound the alarm for those who do not pay for their sins.”
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When Will ‘Nightmare’ Premiere?
“Nightmare” is scheduled to premiere in 2027 on SBS. The drama is currently in pre-production, with casting now complete. Filming is expected to begin soon as the team prepares for next year’s broadcast.
International viewers can expect the drama to be available through major streaming platforms after its Korean broadcast, though specific streaming partners have not yet been announced.
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