Good Boy is a lively and heartfelt action-comedy that puts a refreshing spin on the underdog hero story. Park Bo-gum shines as Yoon Dong-ju, a golden-medalist-turned-cop with the fists of a warrior and the heart of a loyal pup.

Alongside a team of misfit Olympic athletes recruited into the police force, he dives headfirst into a corrupt city’s darkest corners, taking on everything from petty thugs to high-ranking criminals.

The friendship formed between the primary characters after they begin their journey as athletes-turned-officers is key to the formation of the plot.

Notably, Oh Jung-se stands out with a haunting performance as a powerful antagonist, relentlessly pursuing his goals with ruthless determination, no matter the consequences.

The series balances intense street brawls and thrilling showdowns with moments of humour, warmth, and romance—particularly between Dong-ju and sharp-shooting ace Han-na (Kim So-hyun).

Throughout the 16-episode run, the show remains engaging thanks to strong performances, grounded flashbacks, and a central message of grit and teamwork.

Despite a few pacing stumbles and over-the-top moments, Good Boy is ultimately about perseverance, loyalty, and standing up for what’s right—even when the odds are stacked against you. A satisfying, action-filled ride with heart.