Action & Adventure Comedy Crime Drama
S01E01 • 8.6/10 • 90m • 31 May 2025 • KR •

Good Boy (2025) S01E01 – Our Twisted Hero

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.

Cast

Park Bo-gum
Park Bo-gum
Yun Dong-ju
Kim So-hyun
Kim So-hyun
Ji Han-na
Oh Jung-se
Oh Jung-se
Min Joo-young
Lee Sang-yi
Lee Sang-yi
Kim Jong-hyeon
Heo Sung-tae
Heo Sung-tae
Ko Man-sik
Tae Won-seok
Tae Won-seok
Shin Jae-hong
Seo Hyun-chul
Seo Hyun-chul
Hwang Kyeong-cheol
Jeong Man-sik
Jeong Man-sik
Oh Jong-gu
Park Chul-min
Park Chul-min
Kim Geum-nam
Jung Seo-yeon
Jung Seo-yeon
Jung Mi-ja
Eung-soo Kim
Eung-soo Kim
Cho Pan-yeol
Lee Ji-hyeon
Lee Ji-hyeon
Jung Gyeong-mi
Go Joon
Go Joon
Leo
Kim Eung-soo
Kim Eung-soo
Jo Pan-yeol
Han Kyu-won
Han Kyu-won
An Dae-yong
Lee Ji-hye
Lee Ji-hye
Jung Kyung-mi
Lee Dal
Lee Dal
Silver Bunny
Yoo In-soo
Yoo In-soo
Bagboy
Na Ho-sook
Na Ho-sook
Lee Jin-su's Mom
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Reporter

Episodes

Good Boy (2025) S01E01 – Our Twisted Hero S01E01 90m
31 May 25
Good Boy (2025) S01E01 – Our Twisted Hero
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.
Good Boy (2025) S01E02 – Faster, Further, Stronger S01E02 68m
1 Jun 25
Good Boy (2025) S01E02 – Faster, Further, Stronger
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.
Good Boy (2025) S01E03 – Million Dollar Baby S01E03 69m
7 Jun 25
Good Boy (2025) S01E03 – Million Dollar Baby
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.
Good Boy (2025) S01E04 – Float Like a Butterfly S01E04 70m
8 Jun 25
Good Boy (2025) S01E04 – Float Like a Butterfly
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.
Good Boy (2025) S01E05 – Punch-Drunk Love S01E05 71m
14 Jun 25
Good Boy (2025) S01E05 – Punch-Drunk Love
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.
Good Boy (2025) S01E06 – Counterpunch S01E06 66m
15 Jun 25
Good Boy (2025) S01E06 – Counterpunch
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.
Good Boy (2025) S01E07 – Par Terre Par Terre S01E07 64m
21 Jun 25
Good Boy (2025) S01E07 – Par Terre Par Terre
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.
Good Boy (2025) S01E08 – The Aimless Bullet S01E08 65m
22 Jun 25
Good Boy (2025) S01E08 – The Aimless Bullet
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 (2025) S01E09 – Allez S01E09 64m
28 Jun 25
Good Boy (2025) S01E09 – Allez
Han-na is kidnapped, and Dong-ju and Jong-hyeon rush to rescue her, only to find themselves trapped in a deadly crisis. Just when it seems there's no way out, an unexpected gunshot rings out. With an unforeseen sacrifice shaking the team, will they survive?
Good Boy (2025) S01E10 – Time-out S01E10 63m
29 Jun 25
Good Boy (2025) S01E10 – Time-out
The Special Criminal Investigation Team is disbanded in the end. Dong-ju quietly prepares revenge against Ju-yeong alone, but his reckless move only invites a greater crisis. Catching on to his plan, Ju-yeong launches a counterstrike.
Good Boy (2025) S01E11 – Countdown S01E11 64m
5 Jul 25
Good Boy (2025) S01E11 – Countdown
The Special Criminal Investigation Team reunites and uncovers Joo-young's big secret. Frightened by Dong-joo's countdown challenge, Joo-young takes desperate measures. So who will win in the end?
Good Boy (2025) S01E12 – Foul S01E12 67m
6 Jul 25
Good Boy (2025) S01E12 – Foul
Falling into Ju-yeong's trap, Dong-ju suffers a critical injury and faces his greatest crisis yet. Will he push through or fall where he stands?
Good Boy (2025) S01E13 – Load, Start…Don’t Stop S01E13 62m
12 Jul 25
Good Boy (2025) S01E13 – Load, Start…Don’t Stop
With no way to retreat, Dong-joo and the team launch their final all-out attack on Joo-young. Moving in without hesitation, they soon face a fierce counterattack and unexpected difficulties. What is written in their fate?
Good Boy (2025) S01E14 – Kings Never Die S01E14 70m
13 Jul 25
Good Boy (2025) S01E14 – Kings Never Die
Good Boy (2025) S01E15 – On the Ropes S01E15 72m
19 Jul 25
Good Boy (2025) S01E15 – On the Ropes
The entire Inseong police force unites and launches a massive operation against Joo-young's gang. But just when they are close to victory, Joo-young's most devastating counterattack throws the entire city into chaos.
Good Boy (2025) S01E16 – We Are the Champions S01E16 71m
20 Jul 25
Good Boy (2025) S01E16 – We Are the Champions
Amidst the chaos, Dong-joo and Team Inseong begin their decisive battle to determine the fate of the city. Carrying the weight of everyone's hopes and expectations on their backs, will they be able to achieve the ultimate victory and emerge as true heroes?

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