A simple biotech conference descends into pure chaos when a virus starts turning people into monsters. This is the terrifying world of Colony, a new Korean zombie film from the director of Train to Busan. The main trailer for the movie is now here, showing stars Jun Ji Hyun, Koo Kyo Hwan, and Ji Chang Wook fighting for survival. The film is set for release in 2026.
The Story and Setting of Colony
The story of Colony centers on a high-stakes biotech conference that becomes ground zero for disaster. A fast-moving, mutating virus is accidentally released, causing a horrific outbreak. To stop the spread, the authorities make a drastic decision: they completely seal off the entire facility, trapping everyone inside.
Those left alive are not just trapped with the infected; they are trapped with a threat that keeps changing. The virus causes the infected beings to evolve in unexpected and frightening ways, making the fight for survival even more desperate. Inside the locked-down building, survivors must battle these monsters while also dealing with the fear and distrust of each other. The title, Colony, takes on a dark meaning, referring to this sealed-off group of people fighting a losing battle.
Meet the Trapped Characters
The film brings together a powerful group of actors, each playing a person caught in this impossible situation.
- Jun Ji Hyun as Seo Jung: Jun Ji Hyun plays a biotechnology researcher attending the conference. This role marks her first major film project in 11 years, her last being the 2015 hit Assassination. In the trailer, her character delivers a cryptic line that sets the tense and ominous mood for the entire film.
- Ji Chang Wook as Choi Hyun Seok: Ji Chang Wook takes on the role of the building’s security officer. As chaos erupts, his character is shown stepping directly into danger, using his skills to confront the infected head-on.
- Koo Kyo Hwan as Seo Young Cheol: Koo Kyo Hwan’s character appears to be at the very center of the unfolding crisis. The trailer focuses on his uneasy and tense expression, suggesting he may hold a key to the mystery of the outbreak.
The cast also includes Shin Hyun Been as Gong Seol Hee, who struggles to understand the madness around her, Kim Shin Rok as Choi Hyun Hee, whose face shows the terror of a life-or-death moment, and Go Soo, who captures the sheer panic consuming the building.
Director Yeon Sang Ho’s New Horror World
The director behind Colony is Yeon Sang Ho, a name that carries significant weight in the genre. Yeon is famous for creating the massively popular zombie thriller Train to Busan and the dark Netflix series Hellbound.
With Colony, Yeon Sang Ho continues his focus on creating intense, thought-provoking stories about survival and human nature under extreme pressure.
His involvement is a major reason for the high anticipation around the film, as fans expect the same level of gripping storytelling and chilling suspense.
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Trailer Release and Early Reactions
The main trailer for Colony is a 30-second preview packed with suspense. It was first shown to audiences in theaters at the end of 2025, where it quickly started generating excitement and discussion among moviegoers. The official release of the trailer online now allows a global audience to get their first real look at the film’s dark and claustrophobic world.
While detailed fan reactions are still building, the core elements shown have immediately captured attention. The combination of a sealed-building setting, a star-studded cast led by Jun Ji Hyun’s long-awaited return, and Yeon Sang Ho’s proven skill with zombie stories has positioned Colony as one of the most talked-about Korean films coming in 2026.
The film is a joint production by WOWPOINT and Smilegate, with Showbox handling distribution. As of now, Colony is scheduled for a 2026 release, though an exact premiere date has not yet been announced.
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