What happens when Olympic gold meets gritty crime? JTBC’s action-packed drama “Good Boy” delivers a punchy twist on the buddy-cop genre, with speed, strength, and shooting precision
Before We Continue
Sometimes we watch K-dramas that don't feel like mediocre series. Good Boy is one such drama. It has a great combination of sports, action, and down-to-earth emotions that really keeps you glued to the screen. Making former athletes police officers is a new concept, and the occasional light comedy, along with the serious, heart-pounding scenes, is perfect. If you love a good action story, this one is for you.
About the Drama
Title: Good Boy (굿보이)
Writer: Lee Dae-Il
Director: Shim Na-Yeon
Cast: Park Bo-Gum (as Yon Dong Ju), Kim So-Hyun (as Ji Han Na), Oh Jung Se (as Min Ju Yeong), Lee Sang Yi (as Kim Jong Hyeon), Heo Sung Tae (as Ko Man Sik), Tae Won Seok (as Sin Jae Hong)
Episodes: 16
Genre: Crime, Action, Comedy
Streaming Platform: JTBC, TVING, Netflix, Prime Video
Release Date: May 31, 2025
Plot Summary
After facing corruption in the force, boxing gold medalist Yoon Dong-Ju is sent to Insung’s Crime Squad — a demotion with a twist. There, he joins a special unit of Olympic athletes-turned-police officers, including sharpshooter Ji Han-Na, judo master Jung Jae-Hong, and sprinter Kang Hoon. With their unique skills, they tackle high-stakes crimes while dealing with personal wounds, fading glory, and the ever-present shadow of an underground drug empire.
Episode 1: Welcome to the Misfits
A fiery start. Yoon Dong-Ju’s hot-headed punch costs him his badge, but lands him in the middle of an experimental team. We meet the ex-Olympians, all awkward and misfitting in uniform, but brimming with raw potential. Ji Han-Na almost walks out, but a heartbreaking child abuse case pulls her back in.
Episode 2: We are the Champions
The squad starts training under the comically stern Ko Man-Sik. Their physical talents shine, but teamwork? Not so much. Meanwhile, a dark figure named Min Ju-Yeong is introduced — suave, cold, and clearly dangerous.
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Episode 3: The Crime Hits Home
The team’s first real investigation begins — and it’s personal. When Dong-Ju’s friend Gyeong-Il becomes the victim of a hit-and-run, suspicions arise. It wasn’t just an accident. The squad finds itself entangled in a web of lies, corrupt business connections, and high-ranking officials who shield the real killer.
Episode 4: No one is Safe
With Gyeong-Il’s funeral fresh in their minds, the team goes rogue. Ignoring protocol, they dig into the elite elite — a powerful CEO who is oddly untouchable. Kang Hoon uses his agility and charm to infiltrate a luxury event. Jung Jae-Hong interrogates a key witness with calm pressure.
Meanwhile, Dong-Ju’s public outburst lands the team in disciplinary trouble.
Despite the backlash, the squad finally uncovers a key link — the vehicle used in the hit-and-run was registered to Ju-Yeong’s company. The mystery deepens.
Episode 5: A Game of Shadows
The legal system gets involved. Ju-Yeong is briefly handed over to the prosecutors, but it’s clear he’s playing the game smarter than they are. Despite a mountain of evidence, he walks free.
Han-Na questions whether the law is even worth protecting.
Dong-Ju loses control again, this time risking his career permanently. Ju-Yeong smirks in the face of police power, showing he’s more dangerous out in the open.
Episode 6: Blood on the Badge
As the team tails Ju-Yeong deeper, things go horribly wrong. A setup during a sting operation leads to a shootout, and Dong-Ju takes the hit.
The squad falls apart. Man-Sik is furious. Han-Na blames herself.
Dong-Ju is hospitalized, revealing early signs of a mysterious nerve condition possibly linked to a past injury.
While he lies unconscious, the rest of the team is pulled from active duty. Ju-Yeong remains untouchable, and their morale is broken.
Episode 7: Fractured
The team returns to their regular posts — disbanded, defeated. Han-Na considers quitting the force. Jae-Hong visits Dong-Ju daily, trying to make sense of what went wrong.
Flashbacks give us a glimpse into Han-Na’s Olympic past, where she lost a teammate.
Ju-Yeong is revealed to be part of an international drug ring, using front companies for distribution.
Here, Dong-Ju wakes up — not with anger, but sadness. He asks, “Are we still a team?”
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Episode 8: Let the Hunt Begin
Dong-Ju insists on returning to duty, despite his doctor’s warnings. Han-Na starts gathering evidence about a suspicious rehab clinic: one of Ju-Yeong’s shell operations.
In the final minutes, they discover that Ju-Yeong’s drugs are experimental and neurologically damaging, targeting vulnerable athletes and teenagers.
Episode 9: Broken Pieces
A routine patrol turns into a nightmare when Jae-Hong is shot while protecting a civilian. The team is suspended, again. People started to call them “failed heroes.” Dong-Ju starts seeing double — his condition is worsening. He hides it. He always hides it.
Han-Na discovers a name: The Drug Demon — a secret figure funding the neurological testing. They may be running out of time.
Episode 10: Three Months Later
Time jump. The team has scattered, but none of them are the same.
Dong-Ju is doing community service, masking pain with a fake smile.
Han-Na goes off-book, working undercover in Russian mob circles.
Jae-Hong recovers, but now questions everything.
The final scene shows Dong-Ju walking into a dark alley, whispering: “One last mission.”
Episode 11: The Comeback
They may not be cops anymore, but they’re still fighters. The squad unofficially reunites. Dong-Ju, despite his worsening condition, joins Han-Na in tracking the “Drug Demon” and its cruel experiments.
Episode 12: Undercover & Unbreakable
Tension peaks. Dong-Ju goes undercover, only to be caught and tortured. Yeon-Ha comes through in the most heroic moment yet, saving him with a last-second antidote. The team regroups, shaken but stronger.
A Personal Note -
As someone who reviewed action dramas, Good Boy strikes the right balance between thrill and emotion. Episode 12, especially, reminded me of the narrative stakes in Taxi Driver 2 — raw, relentless, and redemptive.
Final Thoughts
Just four episodes left! Good Boy only becomes more exciting as the episodes progress. I, as a K-drama fan, absolutely loved the story that had a perfect balance of action, friendship, and emotions. It was a new and fresh concept for athletes to become cops, and Park Bo-gum is perfect in this role. Each of the characters plays a key role in this drama, and their acting makes this ongoing drama No. 1 in South Korea as well as worldwide.
I cannot wait to see how everything will end. I will leave my final review after the drama ends. I hope for a powerful ending! What do you think about this K-drama? Let me know in the comments below.
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