K.O. Movie Netflix: Trailer, Cast, Plot - Netflix Tudum

  • Deep Dive

    Everything You Need to Know About K.O.

    The French action film stars real MMA fighter Ciryl Gane.

    By Ingrid Ostby
    June 6, 2025

A former MMA champion haunted by the outcome of his final fight teams up with a police officer looking to avenge her brother’s death by mobsters in hopes of rescuing a troubled teen from the clutches of Marseille’s crime overlord. Starring MMA fighter and actor Ciryl Gane, as well as Alice Belaïdi, and Anne Azoulay, the action movie K.O. was written and directed by Antoine Blossier (Remi, Nobody’s Boy; Prey). 

Popular Now

  • I Will Find You Cast: Who’s Who in the Twisty Thriller?
    A man in an orange prison jumpsuit is being escorted by a guard down a dimly lit hallway in a jail or prison, with barred cells and concrete walls visible.

When will K.O. be released?

Stream it now.

A man wearing camouflage talks on the phone as a man in all black stands behind him looking on.
Xavier Baler

Where can I find the trailer for K.O.?

Check it out at the top of this page. 

Two men fight in a nightclub
Laurent le Crabe

Who’s in the cast of K.O.?

  • Ciryl Gane (Den of Thieves 2: Pantera) as Bastien, a former MMA champion who works in a salt mine
  • Anne Azoulay (Black Box) as Emma, the wife of Bastien’s one-time opponent Enzo
  • Alice Belaïdi (If I Were a Boy) as Kenza Alaoui, a police captain
  • Maleaume Paquin (Remi, Nobody’s Boy) as Léo, Emma’s son
  • Foued Nabba (Blood Coast) as Abdel Manchour, the boss of the Manchour crime family
  • Samuel Jouy (Ganglands) as Commissaire Daniel Canistra, Kenza’s boss
  • Virgile Bramly (Nice Girls) as Capitaine Vasseur, Kenza’s colleague
  • Malone Ettori (Candice Renoir) as Capitaine Benoît Sarkissian, Kenza’s colleague
Ciryl Gane as Bastien and Anne Azoulay as Emma

What happens in K.O.?

A prolific MMA fighter, Bastien’s (Gane) final match ends when he accidentally lands a fatal blow on his opponent, Enzo. The moment is witnessed by Enzo’s wife, Emma (Azoulay), and their son, Léo (Paquin). Since then, Bastien’s called it quits on his MMA career, instead becoming a recluse who works in a salt mine. Meanwhile, young Léo’s struggle with grief has taken him down a dark path. So when he goes missing, Emma reluctantly brings Bastien back into the fold to help find him. Bastien’s determination leads him to combine forces with police chief Kenza (Belaïdi), who’s determined to find justice after Marseilles’ most violent gang murdered her brother.   

Where does K.O. take place?

The film takes place in Marseilles, France. 

Action-Packed Movies To Stream Now From The Harder They Fall to Enola Holmes, here are some films to get your heart racing.
Related Tags

Shop K.O.

Go to Netflix Shop

Discover More Deep Dive

  • Wonka’s The Golden Ticket Opens the Chocolate Factory for New Competition Series
    Are you ready to step back into a world of pure imagination this fall?
  • New series Instadocs answers the burning questions on everyone’s minds.
  • The series features interviews with Becky Hill and witnesses from the 2023 trial. 
  • These celebs are going behind bars to earn their redemption.
  • The lore of Liam, Maggie’s husband, is finally revealed.
  • A new group of couples will soon be playing house with a trial spouse.
  • A father unleashes his secret skills when his daughter goes missing.

Discover More Action

  • Stream Voicemails for Isabelle, Office Romance, a new season of Avatar: The Last Airbender, and more.
  • Voicemails for Isabelle dials to the top, and Avatar: The Last Airbender debuts.
  • Tune in to some of the most compelling Bharat titles of 2026 — so far.
  • Yip, yip, let’s get some answers from the showrunner.
  • King and Queen of the Ring semifinals matches are going down.

Latest News