Good Boy TV Series (2025) – Release Date, Cast, Episodes, Story, Trailer, Poster, Platform, Review

Good Boy Trailer, Teaser & Videos

Good Boy Poster & Photos

Good Boy TV Series Details

Hangul굿보이
Also known as Gusboi, Kutpoi, Gutboi
Country South Korea
Language Korean
GenreAction, Mystery, Comedy
Season1
Episodes16
Release dateMay 31, 2025 – Jul 20, 2025
Aired onSaturday, Sunday
Age rating15+
Running time68-90 minutes
StarringPark Bo Gum, Kim So Hyun, Oh Jung Se, Heo Sung Tae, Lee Sang Yi
Directed by Shim Na Yeon
Written byLee Dae II
Produced byKim Woo Taek
Music byHa Sung-jin
Production CompanySLL Studio&NEW, Drama House Studio
Distributor jTBC

Good Boy Cast & Characters

Main Roles

  • Park Bo Gum as Yun Dong Ju (Olympic gold medalist boxer turned police officer)
  • Kim So Hyun as Ji Han Na (Olympic gold medalist shooter turned police officer)
  • Oh Jung Se as Min Ju Yeong (customs officer by day, villain by night)
  • Lee Sang Yi as Kim Jong Hyeon (fencing silver medalist turned police officer.
  • Heo Sung Tae as Ko Man Sik (wrestling bronze medalist, team leader)8
  • Tae Won Seok as Sin Jae Hong (discus throw bronze medalist turned sergeant)

Support Roles

  • Jeong Man Sik as O Jeong Gu (former national boxing team coach, now CEO of J9 Security)
  • Seo Hyun Chul as Hwang Gyeong Cheol (chief of police)
  • Park Cheol Min as Kim Geum Nam (pawn shop owner and informant)
  • Kang Gil Woo as Lee Sang Gun (Geumtokipa’s head)
  • Seo Jung Yeon as Jung Mi Ja (noodle restaurant owner)
  • Seo Jae Hee as Jin Gyeong Suk (Han Na’s mother, insurance saleswoman)
  • Choi Woo Jin

Good Boy Storyline (Plot)

The story of medalists in international competitions who decided to become police officers through the Olympic special recruitment. Instead of medals on their necks are now their police IDs as they encounter a lot of immoral and foul people. The K-drama will showcase an “Olympic Avengers,” a special team that will be dedicated to violent crimes and cases filled with injustices by utilizing their skills as a player.

Good Boy K Drama Episodes

EpisodeTitleRelease DateRunning Time
1Our Twisted HeroMay 31, 20251h 30min
2Faster, Further, StrongerJune 1, 20251h 8min
3Million Dollar BabyJune 7, 20251h 9min
4Float Like a ButterflyJune 8, 20251h 12min
5Punch-Drunk LoveJune 14, 20251h 12min
6CounterpunchJune 15, 20251h 6min
7Par terre Par terreJune 21, 20251h 4m
8The Aimless BulletJune 22, 20251h 5m
9June 28, 2025
10June 29, 2025
11July 5, 2025
12July 6, 2025
13July 12, 2025
14July 13, 2025
15July 19, 2025
16July 20, 2025

Good Boy Episode Guide (Short Summary)

Episode 1
After causing trouble, Dong-ju is demoted to the Insung Metropolitan Police Agency, where he’s treated like dead weight and his fellow world-class medalists also face discrimination and scorn. But when a major case erupts, it reignites the fire in their hearts.
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Episode 2
At Man-sik’s suggestion, a special criminal investigation team is formed with the former world-class medalists. Ready for a fresh start, each member joins with their own hopes and goals, but behind the creation of this special team lurks a hidden agenda.

Episode 3
Convinced that Ju-yeong is the hit-and-run driver, Dong-ju scrambles to find evidence. Meanwhile, Jong-hyeon heads to the Prosecutors’ Office at Man-sik’s request to investigate Gyeong-il’s case, and Ju-yeong meets someone in the shadows.

Episode 4
The Special Criminal Investigation Team is now complete with Han-na’s return and Jong-hyeon joining. They launch a full-scale investigation into Gyeong-il’s death and Min Ju-yeong. As they split into teams and close in on their targets, Han-na receives her father’s case files.

Episode 5
While investigating Ju-yeong, the Special Criminal Investigation Team is forced to hand him over to the prosecution after their sudden intervention. Dong-ju is hospitalized for tests following his car accident, and the team digs deeper into Ju-yeong’s true identity and his connections to the prosecution.

Episode 6
Using Han-na’s surprise kiss as an excuse, Dong-ju heads out alone with her on an investigation and discovers Ju-yeong’s burner phone. Jong-hyeon finds himself growing uneasy as Dong-ju and Han-na get closer. Meanwhile, Drugmon, under surveillance in an apartment, begins plotting her escape.

Episode 7
Dong-ju’s assault puts the Special Criminal Investigation Team in a major crisis. Man-sik fights to keep the team together, while the others continue investigating Ju-yeong, weighed down by uncertainty. Meanwhile, Ju-yeong leaves the hospital and heads to an unknown destination.

Episode 8
The Special Criminal Investigation Team catches wind of Ju-yeong’s drug smuggling and infiltrates the customs office disguised as a quarantine unit. Following a lead left by Drugmon, they manage to find the container hiding the drugs but walk straight into a trap set by Ju-yeong.

Good Boy Release Date

Good Boy premiered on JTBC on May 31, 2025, and airs every Saturday and Sunday at 22:40 (KST).

Good Boy – Where to Watch and Stream

Good Boy is available on Disney+ , Amazon prime video and TVING.

About Good Boy TV Series

Good Boy (Korean: 굿보이) is an ongoing South Korean action mystery comedy television series directed by Shim Na Yeon and written by Lee Dae II. The series stars Park Bo Gum, Kim So Hyun, Oh Jung Se, Heo Sung Tae, and Lee Sang Yi in the lead roles.

Good Boy is on scheduled for production as part of Studio&NEW’s drama programming, in February 2021. The screenplay is written by Lee Dae-il, who is known for Life on Mars and both seasons of Chief of Staff, and it is produced by SLL, Studio&NEW, and Drama House Studio.

In terms of casting, initially Park Bo-gum and Oh Jung-se were announced as the leads in July 2023. Shortly after Kim So-hyun was reported around August 3 2023. Park Bo-gum and Kim So-hyun were officially confirmed as the lead actors in January 2024. Oh Jung-se, Lee Sang-yi, Heo Sung-tae and Tae Won-seok would later joined the cast in July 2024.

The first full script read took place on March 21, 2024 and filming started Shortly after, in late March. The production would go on hiatus in August for a minor leg injury to Park Bo-gum due to injuries sustained in an action scene in Busan. He would be treated in Seoul the following month before the cast resumed filming.

In December 2024, JTBC declared that Good Boy would be among its 2025 drama offerings, aiming for a release some time in the first half of the calendar year. In later January 2025, reports emerged that the series would run in June, but ultimately it has been officially confirmed to premiere on May 31, 2025. The drama will air every Saturday and Sunday at 10:40 p.m. KST on JTBC.

For streaming, Good Boy will be available globally, in addition to South Korea, on Netflix, Disney+, and TVING, while internationally air on Amazon Prime Video in 240+ countries and territories.

When will the Good Boy be released?

Good Boy premiered on JTBC on May 31, 2025, and airs every Saturday and Sunday at 22:40 (KST).

Where to watch Good Boy TV series?

Good Boy premiered on JTBC on May 31, 2025, and is available on two of the world’s largest streaming platforms: Amazon Prime Video and Disney+.

How many episodes are in Good Boy?

Good Boy is a K-drama consisting of a total of 16 episodes. It premiered on JTBC on May 31, 2025, and airs every Saturday and Sunday at 22:40 (KST).

Who is the director of Good Boy TV series?

Good Boy South Korean Television series is directed by Shim Na Yeon.

Who is the writer of Good Boy TV series?

Good Boy K drama is written by Lee Dae II, who wrote Life on Mars (2018) and the first and second seasons of Chief of Staff (2019).

Who are the lead cast in Good Boy TV series?

Good Boy (Korean: 굿보이) is a South Korean action mystery comedy television series, and it stars Park Bo Gum, Kim So Hyun, Oh Jung Se, Heo Sung Tae, and Lee Sang Yi in the lead roles.

Is there a trailer for the Good Boy?

Good Boy K-drama has officially released teasers and trailers across multiple platforms, including the JTBC Drama YouTube channel and Prime Video channels in various countries

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