Undercover Miss Hong: Nothing Less Than a Magnificent Triumph

When deciding whether to set a story in the present or a few decades ago, there’s much that a screenwriter should take into consideration beyond mere nostalgia. Surely, if they decide to set their tale in the past, the most important factor is what the decade in question can convey or illustrate that is still relevant to us, an audience living in the ever-changing “right now”. When a writer succeeds in answering this question with conviction, their work becomes timeless — a journey that can be visited and revisited no matter what point of the world’s timeline you find yourself in.

That’s the extraordinary feat scriptwriter Moon Hyun-kyung manages to achieve in tvN’s Undercover Miss Hong, a workplace dramedy that came to an end on March 8th, 2026. Structured in the classic K-drama format of 16 episodes and skilfully directed by Park Seon-ho and Na Ji-hyun, Undercover Miss Hong is an undisputed triumph: a riveting, clever, and thoroughly entertaining tale about unyielding integrity in the face of unflinching corruption.

This review is spoiler-free. But if you’re in a rush, why don’t you pin our summary? It’s at the bottom!

Once Upon a Time in Yeouido…

Undercover Miss Hong introduces us to the one-and-only Hong Keum-bo (Park Shin-hye), a brilliant, confident, and thick-skinned senior inspector of the Capital Market Investigation Division at the Financial Supervisory Service (FSS) in Seoul. Set in the late 90s, it’s no surprise to see that Hong is the only woman in the office and that her colleagues are clearly offended by the fact that she dares not only to be more than the coffee girl, but also to do her job better than everyone else.

Hong is determined to uncover the corruption behind the powerful Hanmin Investment & Securities, but with all their money and ties with the government, Hong seems to be fighting a losing battle. She’s given a glimmer of hope when a member of Hanmin’s upper echelon contacts her, offering evidence of the company’s financial misconduct: a detailed slush fund ledger. Only a “glimmer” it was indeed, because her contact soon ends up dead in a questionable car accident, leaving Hong with a half-baked investigation that gives the naysayers around her enough reason to demote her.

With the support of her loyal supervisor, the wonderful Yun Jae-beom (Kim Won-hae), Hong decides to assume her young sister’s identity and embark on an undercover mission to find the whistleblower and their elusive ledger. And so, Hong Keum-bo becomes Hong Jang-mi, a 20-year-old high school graduate who joins Hanmin as a junior clerk and moves into the Seoul City Dormitory for Single Female Workers. There, she is to share a room with senior secretary Go Bok-hee (Ha Yoon-kyung), fellow junior clerk Kang Eun-joo (Choi Ji-soo), and bank teller Kim Mi-sook (Kang Chae-young).

These four women, coming from completely different backgrounds and carrying different wounds and desires, become the beating heart of Undercover Miss Hong. Against a sexist world that sees them as inferior and weak, they revolutionise not only their own lives and the lives of those who surround them, but the whole financial district of Yeouido.

The Enthralling Adventures of Undercover Miss Hong

Undercover Miss Hong counts on a tight script in which every single character has a vital role to play and every single scene matters. After a first episode that sets clear stakes, goals, and initial characterisation, the narrative unravels at a confident pace, knowing when to let an event breathe and when to speed things up. The tone feels grounded — serious, but never too solemn, thanks to a sharp sense of humour that permeates the series.

After all, how could you tell a story about a 35-year-old highly educated woman who pretends to be a 20-year-old high school graduate without a good dose of irony? Undercover Miss Hong is constantly self-aware, making excellent use of what we call “lampshading” throughout (“lampshading” is when a story points out an implausible element that could threaten the audience’s suspension of disbelief; a sort of wink from the scriptwriter that says, “yes, I know this is crazy, but go along with it“). The fact that Hong doesn’t look or act like an inexperienced 20-year-old is referred to all the time, leading to all sorts of jokes and silly shenanigans that stop the series from ever becoming too dark.

It’s also ironic how Hong and her roommates are constantly outsmarting everyone while being seen as the bottom of the food chain. Undercover Miss Hong is a story about intelligent people who think before they act and whose narrative never hinders their progress by shoehorning preventable circumstances that only exist to create melodrama. No, Undercover Miss Hong is a narrative of meticulous cause-and-effect. Hong’s journey towards — and beyond — the slush fund ledger is one full of unpredictable twists and turns, an adventure designed by well-rounded characters who are given agency and wit to cause their own progress or downfall.

Hong is a force of nature, constantly changing her environment and the people who are lucky enough to cross paths with her. She’s kind, righteous, and a bit too proud for her own good — the sort of protagonist that you can’t help but fall in love with and root for. Hong is strong yet vulnerable, and the quest she leads so proactively proves that courage isn’t the absence of fear, but the wholehearted commitment to values that are much bigger than the individual.

The characters surrounding Hong are given the same care and attention, resulting in a series whose characterisation is flawless from beginning to end. Beyond Hong’s unwavering virtue and Hanmin CEO Kang Pil-beom’s (Lee Deok-hwa) complete wickedness, Undercover Miss Hong thrives in its morally grey characters. That becomes especially evident in Bok-hee, who is marvellously jaded by an unfair society, and Hong’s ex-boyfriend and Hanmin President Shin Jung-woo (Ko Kyung-pyo), who becomes a compelling enigma that we spend most of the series trying to solve. What are these characters doing next? Why? How? We can only guess.

With such strong personalities at its disposal, it goes without saying that this screenplay is full of variables and different dynamics that grant pure verve to the show. There’s such a variety of relationships in Undercover Miss Hong, and they are all so complex and vivid that you never know what sort of ripple effect these bonds will have in the bigger picture. These dynamics encourage characters to grow organically, leading to an endlessly rewarding journey for the audience.

As characters often hide their real intentions and goals, subtext gives depth to the script, which shapeshifts throughout its 16-episode run. With the IMF crisis bubbling underneath and a tale of greed and selfishness ravaging the lives of everyday workers on top, Undercover Miss Hong goes from an undercover story to a heist to a relentless witch hunt, all the while progressively untying its narrative knots and allowing the story to find a logical and well-developed resolution.

A Tale of Trust, Integrity, and Sisterhood

Thematically, Undercover Miss Hong relies heavily on contrast to portray bonds of trust: while Hong’s rapport with her roommates and colleagues grows ever stronger, the relationships between the antagonists grow ever weaker. Hong knows how to manipulate people’s greed and arrogance to win her battles, which she fights alongside the most loyal — and sometimes the most surprising — allies.

Hong’s journey never shies away from raising all sorts of moral questions: What is truly fair? How far can we bend without breaking? Can one’s pursuit of justice and fair punishment for the fat cats actually harm the common folk? As our characters come up with their own answers, they navigate a story about commitment, integrity, and work ethic, about standing up to your values and using them to carve your path through life.

Beyond corruption and justice, Undercover Miss Hong also offers some very sharp social commentary on sexism in the workplace, nepotism, and exploitative company culture. Social systems and capitalism not-so-quietly punctuate this narrative, leading to a series that has much to share and discuss beyond the goofiness of its main premise and the excitement of its revelations.

Most significantly, Undercover Miss Hong is a story about women: women as kaleidoscopic, ingenious, and resourceful beings who never give in to a system that oppresses them. A compelling illustration of the beauty and strength of sisterhood and motherhood, this is a show that celebrates the kindness and warmth that mark these bonds, allowing them to fuel the development of a more equal, respectful, and robust society.

Bringing It All Together: Visual Language & Performances

This narrative and thematic cohesion is beautifully bolstered by a well-established visual language: the production design is gorgeously authentic, the colour schemes are always on point, and the cinematography gives texture and spirit to Hong’s tale. The soundtrack is very 90s-esque and yet modern enough to connect Hong to us in the present.

What makes it all shine is this cast’s immaculate performances, of course. Park Shin-hye is as much a force of nature as her character, delivering Hong with pizzazz and tenacity. Park knows exactly when — and how — to be funny and when to give her delivery the exact amount of drama and seriousness needed. Responding to her with the same nuance is Ko Kyung-pyo, who gives President Shin a veil of mystery and a gravity that is palpable. For the first half of the show, Park and Ko share very few scenes together, but when they do, it’s simply bewitching to observe how they play around with their chemistry and build the tone of their scene in tandem.

The rest of the cast is just as talented: Kim Won-hae continues to be one of the greatest, most endearing (and probably most underrated) actors out there, Bok-hee lets Ha Yoon-kyung explore her acting chops in the most charming way possible, Park Mi-hyun turns the awful Song Ju-ran into an incredibly intricate antagonist, just to mention a few. This cast is so wide and so extraordinary that we could go on and on until the cows come home.

Should You Watch Undercover Miss Hong?

Cleverly written and confidently delivered, Undercover Miss Hong is a superb workplace dramedy that keeps you on your toes to its very last episode. A bit like a huge, intriguing puzzle, this script carves each and every single piece carefully, making sure that they all fit perfectly together to convey the story it wants to tell.

Hong’s caper is captivating, funny, and, despite its 90s setting, surprisingly timely — which means that you finish Undercover Miss Hong with the feeling that Hong is still out there, forever bringing down corrupt administrations, changing the people she meets, and making the world a better place one undercover stint at a time.

You can watch Undercover Miss Hong on: