This review may contain spoilers
SEO KANG JOON IS BACK!!!
Every once in a while, a drama comes along that’s just pure fun—and Undercover Highschool fits that bill perfectly. With its mix of undercover missions, ridiculous high school antics, and a hidden treasure plot that sounds like it came straight out of a comic book, this 2025 K-drama doesn’t take itself too seriously—and that’s exactly why it works.
At the heart of the chaos is a secret agent (played by Seo Kang Joon) who’s sent to pose as a high school student. His mission? Find a stash of gold bars that’s been hidden somewhere within the school grounds. It’s as wild as it sounds—and somehow, it works. What starts off as a slightly ridiculous premise quickly turns into a fast-paced adventure, with just enough mystery and clever twists to keep you invested.
Seo Kang Joon leads the drama with sharp charisma and an effortless balance between action and comedy. This marks his return to the small screen after completing his military service, and honestly, it’s a great choice for a comeback project. He handles the action scenes with a cool confidence, and his comedic timing gives the character a fun, unexpected edge.
One thing longtime fans might notice, though, is the lack of romance. Seo Kang Joon has always been particularly strong in emotionally charged, romantic roles, and it’s a bit of a shame that Undercover Highschool doesn’t really lean into that side of him. There are a few moments that feel like they could’ve led to something deeper, but the drama clearly chooses to stay focused on the action-comedy route. It’s not a major flaw, but if you’re hoping for swoon-worthy scenes, you might be left wanting more.
The supporting cast brings a ton of personality to the story—from oddball classmates to suspicious teachers—and the energy stays high all the way through. There’s a kind of comic-book charm to the way the story unfolds, filled with over-the-top moments and just enough heart to keep things grounded. The pacing is tight, the visuals are crisp, and the soundtrack knows when to turn up the tension—or lean into the laughs.
All in all, Undercover Highschool doesn’t try to be the deepest or most dramatic story out there, but it knows exactly what kind of show it wants to be. It’s entertaining, fast-paced, and full of fun characters you’ll enjoy watching—even if they’re totally chaotic. If you’re looking for a break from heavy plots and just want something to enjoy with a bowl of popcorn, this one’s worth queuing up.
At the heart of the chaos is a secret agent (played by Seo Kang Joon) who’s sent to pose as a high school student. His mission? Find a stash of gold bars that’s been hidden somewhere within the school grounds. It’s as wild as it sounds—and somehow, it works. What starts off as a slightly ridiculous premise quickly turns into a fast-paced adventure, with just enough mystery and clever twists to keep you invested.
Seo Kang Joon leads the drama with sharp charisma and an effortless balance between action and comedy. This marks his return to the small screen after completing his military service, and honestly, it’s a great choice for a comeback project. He handles the action scenes with a cool confidence, and his comedic timing gives the character a fun, unexpected edge.
One thing longtime fans might notice, though, is the lack of romance. Seo Kang Joon has always been particularly strong in emotionally charged, romantic roles, and it’s a bit of a shame that Undercover Highschool doesn’t really lean into that side of him. There are a few moments that feel like they could’ve led to something deeper, but the drama clearly chooses to stay focused on the action-comedy route. It’s not a major flaw, but if you’re hoping for swoon-worthy scenes, you might be left wanting more.
The supporting cast brings a ton of personality to the story—from oddball classmates to suspicious teachers—and the energy stays high all the way through. There’s a kind of comic-book charm to the way the story unfolds, filled with over-the-top moments and just enough heart to keep things grounded. The pacing is tight, the visuals are crisp, and the soundtrack knows when to turn up the tension—or lean into the laughs.
All in all, Undercover Highschool doesn’t try to be the deepest or most dramatic story out there, but it knows exactly what kind of show it wants to be. It’s entertaining, fast-paced, and full of fun characters you’ll enjoy watching—even if they’re totally chaotic. If you’re looking for a break from heavy plots and just want something to enjoy with a bowl of popcorn, this one’s worth queuing up.
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