tvN | Saturdays & Sundays 9:10pm KST | Premieres April 25, 2026 | 12 Episodes × 70 min | Streaming on TVING, Wavve, HBO Max & Viki
Sometimes you need a drama that doesn’t require you to use your brain. Something where you can just sit back, relax, and enjoy the ride. THIS is that drama. An office rom-com set in an internal audit team where the investigations are about petty office scandals rather than massive corporate fraud, and the romance quietly blossoms in between the chaos.
Filing for Love looks like it’s going to be SO much fun. I’m here for it.
The Premise
At Haemu Group, the internal audit team isn’t investigating billion-won financial fraud. They’re handling the MESSY, human side of corporate life — workplace affairs, office bullying, misuse of company credit cards, gossip that’s gotten out of hand. The real scandals that every office worker knows about but nobody officially reports.
Joo In Ah (Shin Hae Sun) is the youngest female executive in the company’s history. She’s the head of the audit office — tough, charismatic, no-nonsense. She’s hiding a secret that nobody knows about. She expects excellence from everyone and shows no mercy to those who break the rules. They call her the “poisonous” audit leader. But behind that cold exterior? Something she can’t tell anyone.
No Gi Jun (Gong Myung) used to be the ACE of the audit office — top performer, destined for promotion. Then In Ah arrived, and suddenly he gets DEMOTED to Audit Team 3, the problem team. He’s now handling the company’s messiest misconduct cases. He’s furious. He wants revenge against In Ah. He starts digging into HER secrets.
But here’s where it gets interesting — as he digs into her secrets for revenge, he finds himself drawn to her instead. And as she shares her secret with him, she starts to wonder whether he might be the one person who can help her overcome her dark past and finally find happiness.
An office romance that blossoms within the very duty meant to chase down office affairs and corruption. That’s the irony at the heart of this drama — the two people investigating inappropriate workplace relationships are slowly falling into one themselves.
The producer has said there’s a MIDSERIES REVERSAL — for the first four episodes, In Ah leads the dynamic. Then it flips, and the power shifts. That kind of structural storytelling keeps things fresh.
The Cast
Shin Hae Sun (신혜선)
Joo In Ah
Known for: Mr. Queen, Dear Hyeri (My Happy Ending), The Art of Sarah, Still 17, Angel’s Last Mission: Love, See You in My 19th Life
Hello QUEEN. This woman’s acting ability is CRAZY. You know it’s going to be good when she’s in it. She is an absolute all-rounder — comedy, drama, romance, emotional devastation, she can do it ALL.
The way she made me LAUGH in Mr. Queen was something else. That drama was hilarious and she carried every single comedic beat with perfect timing. And then Dear Hyeri — I’m going to be honest, I hated that drama and couldn’t finish it. But even in a drama I didn’t like, she STILL managed to shine. That’s talent. When the actress outperforms the material she’s been given, you know you’re watching someone special.
Joo In Ah sounds perfect for her — a powerful woman with a secret vulnerability hiding behind a tough exterior. That duality is exactly what Shin Hae Sun does best.
Gong Myung (공명)
No Gi Jun
Known for: Mercy for None, Lovers of the Red Sky, Café Minamdang, Find Me in Your Memory, Extreme Job (film)
Why do I find this man so INOFFENSIVE? Like genuinely — apart from Mercy for None, he always plays the good guy. He’s just… likeable. You can’t hate him. He’s got this energy where even when his character is supposed to be scheming or upset, you still root for him.
I first watched him in Lovers of the Red Sky — another drama I disliked (see a pattern? I keep watching dramas I don’t enjoy but the actors save them) — but he stole my heart in it. He was such a nice character and I wished he got what he deserved. He never does in those second-lead roles. Always the one who doesn’t get the girl.
But HERE? He’s the MAIN LEAD. Finally getting the girl. And his character has “masculine charm” according to Gong Myung himself — plus he said teaming up with Shin Hae Sun would make for a really interesting and fun duo. I agree. These two are going to have incredible push-and-pull chemistry.
He even had a cute cameo in Bloodhounds Season 2 recently where his interaction with Gun Woo was adorably awkward. This man just radiates warmth.
Kim Jae Wook (김재욱)
Jeon Jae Yeol
Known for: Voice, Her Private Life, Goblin, Coffee Prince, The Guest, Crazy Love
There is NO doubt that this man can act. But I’ll be honest — I always hate his characters. I first saw him in Voice and since then he’s been the character I love to hate. In my mind he will NEVER be the good guy. Even when he’s playing someone who’s supposed to be sympathetic, there’s this edge to him that makes you not fully trust him.
Jeon Jae Yeol is the third-generation chaebol heir of Haemu Group. He seems perfect — high-achieving, devoted son, elegant exterior. But he hides a deep void. His biological mother was kicked out after becoming seriously ill, and he clashes with his half-brother over who’ll take over the company. He opts for “reality over love” in the succession race.
So he’s another morally complex character hiding pain behind a perfect image. Classic Kim Jae Wook territory. I’ll probably hate him. But I’ll be impressed.
Hong Hwa Yeon (홍화연)
Park A Jeong
Known for: Buried Hearts
Hong Hwa Yeon only came to my attention in Buried Hearts so I still haven’t made my mind up on her quite yet. Time will tell if she’s a talented actress. She plays Jae Yeol’s secretary — a woman who realised her beauty can make her life more difficult, so she’s kept her guard up. Then she develops a severe crush for the first time in her life.
She anchors the second romance alongside Kim Jae Wook — the chaebol heir and his secretary. That’s a dynamic that could go either way — sweet or toxic. Let’s see where they take it.
The Creative Team — Crash Course in Romance Connection
This drama was CREATED by Yang Hee Seung — the mind behind Crash Course in Romance (2023), one of tvN’s biggest recent hits. That drama proved you could take an everyday setting (education/tutoring) and turn it into appointment television through characters, comedy, and heart.
Writer Yeo Eun Ho worked with Yang on Crash Course in Romance, so the creative partnership is proven.
Director Lee Soo Hyun directed My Dearest Nemesis (2025).
Production by Studio Dragon and The Modori — the same team behind Love Next Door (2024).
That’s a LOT of rom-com pedigree in one production. These people know how to make workplace comedy that actually works.
What I’m Excited About
Shin Hae Sun doing comedy again. After Mr. Queen, I KNOW she can make me laugh. And an audit leader with a secret? She’s going to give us the cold exterior cracking in real time.
Gong Myung as the main lead. He’s been the second lead too many times. He deserves this. He’s likeable, he’s got charm, and him plotting revenge against his boss while falling for her is going to be brilliant.
The office setting feels relatable. Petty scandals, misuse of the company credit card, colleagues doing personal business in the company toilets — this is EVERY OFFICE. They’re not investigating murder. They’re investigating the guy who expensed his wife’s birthday dinner. That’s hilarious.
The power reversal at episode 4-5. The producer confirmed In Ah leads the dynamic first, then it flips. Structured romance arcs always pay off better than will-they-won’t-they dragging.
It’s an easy watch. Not every drama needs to be emotionally devastating or intellectually demanding. Sometimes you want something that’s going to make you laugh, make you swoon, and not make you need therapy afterwards. This is that drama. Sit back, relax, and enjoy.
Weekend slot on tvN. Saturday and Sunday evenings? Perfect placement. End your week with something light.
Quick Stats
Title Filing for Love (은밀한감사)
Also Known As Secret Audit, Secret Gratitude
Network tvN (Sat & Sun 9:10pm KST)
Streaming TVING, Wavve, HBO Max, Viki
Episodes 12 × 70 min Airing April 25 – May 31, 2026
Genre Comedy, Romance, Melodrama
Created By Yang Hee Seung (Crash Course in Romance)
Writer Yeo Eun Ho
Director Lee Soo Hyun (My Dearest Nemesis)
Production Studio Dragon, The Modori
MDL Watchers 8,800+ (pre-premiere)
Cast
Shin Hae Sun
Joo In Ah — youngest female executive, fierce audit leader, hiding a secret
Gong Myung
No Gi Jun — demoted ace auditor, plotting revenge, falling in love instead
Kim Jae Wook
Jeon Jae Yeol — chaebol heir hiding a void behind perfection
Hong Hwa Yeon
Park A Jeong — secretary with her guard up, crushing for the first time
Oh Dae Hwan
Moo Gwang Il — Audit Team 3 leader, master of coasting to retirement
He was demoted. She’s hiding a secret. He digs for revenge. She lets him in. And somewhere between the audit reports and the office scandals, two people who shouldn’t be together start filing for something that has nothing to do with love.
Except it does.
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