Mantis is a South Korean action thriller directed by Lee Tae-sung and written with Kill Boksoon screenwriter Byun Sung-hyun. This new feature stars Yim Si-wan, Park Gyu-young and Jo Woo-jin in a breathtaking tale of rival hitmen. Available from September 26, 2025 on Netflix, the film is billed as a direct spin-off of Kill Boksoon, released in 2023.
The trailer hints at edgy action scenes and a dark atmosphere, in a world where honor and survival intertwine.
Mantis will be available exclusively on Netflix from September 26, 2025.
Synopsis: After a break from the business, elite assassin Mantis returns to the murder-for-hire industry. He reunites with Jae-yi, a rival with whom he cut his teeth, and Dok-go, a legendary killer who is now retired. Before long, all three are vying for the title of top killer in a violent, anarchic world.
This new film follows on from Kill Boksoon (2023), directed by Byun Sung-hyun. Expanding on this dark and violent universe, Mantis highlights other charismatic characters and offers a new perspective on the hitman industry. This connection should appeal to viewers who enjoyed the original film's blend of stylized action and moral drama.
Yim Si-wan, already noted for his roles in Unlocked and The Merciless, plays Mantis, the main assassin. Park Gyu-young, known for her appearances in Sweet Home and Dali and Cocky Prince, plays Jae-yi, his former classmate and rival. Finally, Jo Woo-jin, a regular in Korean thrillers(Drug King, Steel Rain), completes the cast as Dok-go, a legendary figure in the underworld.
This film is aimed at fans of intense Korean thrillers and stylizedaction films. Viewers who enjoyed Kill Boksoon, but also sagas such as John Wick, should be seduced by this universe where spectacular action mixes with the moral dilemmas of hitmen. Available directly on Netflix, Mantis is aimed at a wide international audience of thrill-seekers.
Mantis is an action-thriller directed by Lee Tae-sung. A spin-off of Kill Boksoon, it features a trio of charismatic killers played by Yim Si-wan, Park Gyu-young and Jo Woo-jin. It is scheduled for worldwide release on Netflix on September 26, 2025, confirming the growing importance of Korean cinema in the international production landscape.
This article is based on information available online; we have not yet viewed the film or series mentioned.
What to watch on Netflix in September 2025?
Find out what Netflix has in store for you in September 2025: all the new series and movies you won't want to miss this month. [Read more]
Don't know what to watch? To find your way around the endless catalogs of streaming platforms, rely on our guide! Netflix, Disney +, Prime Video, Paramount+, Apple TV+, Max... Here's a quick roundup of films and series to watch right now. [Read more]
Today's new streaming releases: movies and series added today to Netflix, Prime Video, Disney+, Apple TV+, HBO Max, Paramount+, and VOD. [Read more]
This page may contain AI-assisted elements, more information here.
What to watch on Netflix in September 2025?
New movies and series to watch in November 2025 on streaming platforms
What to watch today on streaming? Today's new releases
