Agent Kim Review: Spy Thriller or Flop?

Premiering June 26, 2026, Agent Kim is an eight-episode action-crime rollercoaster directed by Lee Sung-young (of The Outlaws fame). So Ji-sub plays Manager Kim, a former black-ops agent now living a quiet life as a single dad running a small convenience store. When his teenage daughter, Jung Sang-a (played by Son Na-eun), goes missing, Kim must resurrect his dormant skills-and old enemies-to find her. Written with a tight, propulsive script that balances brutal fight scenes with genuine father-daughter warmth, the series has earned a solid 7.186/10 on TMDb. It’s not reinventing the wheel, but it’s polishing that wheel until it sparkles.

Let’s talk about the elephant in the room: So Ji-sub’s physicality. The man is 48 years old, and he moves like he’s been binge-watching John Wick while doing push-ups. Every punch lands with a satisfying thwack, every chokehold feels desperate rather than choreographed. Director Lee wisely keeps the camera close during fights-no shaky-cam nonsense-so you feel every grunt and gasp. There’s a scene in Episode 3 where Kim takes on three goons in a parking garage, and it’s less about showing off and more about survival. You can see the exhaustion in his eyes.

But what elevates Agent Kim beyond the usual revenge-porn is the emotional core. Choi Dae-hoon plays Seong Han-su, a detective who suspects Kim’s past and becomes an uneasy ally. Their chemistry is electric: the jaded cop and the feral dad, trading barbs and bullets. Yoon Kyung-ho’s Park Jin-cheol is the menacing villain you love to hate, while Ju Sang-uk’s Ju Gang-chan adds a layer of conspiracy that keeps the plot from feeling predictable.

The show’s biggest strength? It knows when to slow down. Episode 5 features a quiet scene where Kim sits in his daughter’s room, holding her stuffed rabbit, and the silence is louder than any explosion. That’s the stuff that makes you tear up before the next round of punches.

On the flip side, Agent Kim sometimes rushes its secondary characters. Son Na-eun’s Jung Sang-a is more plot device than person-we learn she’s smart and brave, but she’s mostly a motivating force. And the conspiracy twists in the final two episodes feel a tiny bit contrived, like the writers threw in an extra betrayal just to keep the season from ending on a clean note.

Still, this is a show that knows its lane and drives it efficiently. If you’re craving a Korean action series that doesn’t forget the heart beneath the violence, Agent Kim Reactivated delivers hard.

Pros

• So Ji-sub delivers a career-best performance, blending vulnerability with lethal precision
• Brutal, well-choreographed fight scenes that feel real, not rehearsed
• Strong supporting cast, especially Choi Dae-hoon’s detective
• Emotional father-daughter relationship that actually earns its tears
• Tight eight-episode runtime-no filler, no padding

Cons

• The daughter character is underdeveloped, existing mostly as a MacGuffin
• Final act conspiracy feels rushed and slightly overcomplicated
• Some side characters (looking at you, Gang-chan) could use more screen time
• Pacing drags a bit in Episode 6, but it recovers quickly

Agent Kim Reactivated is the kind of show that reminds you why action dramas still matter. It’s not flashy. It’s not trying to be the next Squid Game. It’s a straight-up, hard-hitting story about a father who will burn the world down for his kid-and the ghosts he has to fight along the way. So Ji-sub proves that age is just a number, dad bods can be deadly, and the most dangerous weapon is a parent’s love.

Should you watch it? Absolutely. Grab some popcorn, brace for feels, and get ready to cheer for a convenience store owner who knows exactly how to break your nose. Just maybe don’t watch it with your dad-you’ll both get too emotional.

Streaming exclusively on Netflix in select regions.