What's Wrong with Secretary Kim poster

TV series

What's Wrong with Secretary Kim

20181 season8.3 / 10

Don't quit your job because I will date you.

When his secretary unexpectedly quits, an arrogant executive will do anything to bring her back.

Streaming, rental and purchase options

Where to watch in United States

Checked Nov 6, 2026

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Synopsis

When his secretary unexpectedly quits, an arrogant executive will do anything to bring her back.

Season 1 episodes

Choose an episode, then use the watch options above for the show.

Episode 1

I Want to Pick Up My Life Now

1h 3m6.3 / 10

Young Joon has never been turned down by anyone for his entire life. However, Kim Mi So, his secretary, suddenly tells him that she will quit her job. He is suddenly confused by why she would quit and asks for advice from his friend. After hearing his advice, Young Joon tries everything he can to make Mi So stay.

Episode credits

Guest stars Choi Na-moo, Hong Ji-yoon

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Episode 2

She Just Doesn’t Want to Get Married

1h 4m9.2 / 10

Mi So reveals Young Joon’s secret to Ji Ran to make her give him up. Young Joon does not really understand why Mi So wants to quit her job, so he proposes to Mi So to keep her on his side forever. However, by his great surprise, Mi So rejects Young Joon’s proposal and leaves him dumbfounded and even more confused. Yoo Shik gives him a friendly advice about how to win a woman’s heart.

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Episode 3

Go on a Date

1h 5m9.5 / 10

Young Joon calls Mi So out to the amusement park and gives her retirement present. Mi So gets touched by Young Joon’s new attitude. Mi So, who only cared about her job, goes out on a blind date. Young Joon hears about Mi So trying to get into a relationship and feels anxious about Mi So being with other guys.

Episode credits

Guest stars Park Byung-eun, Hong Ji-yoon, Song Yi-jae

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Episode 4

I Come Back to Forgive You

1h 5m9.2 / 10

Young Joon gets infuriated with jealousy after Mi So went to the blind date. They visit Yumung Group’s art center to expedite the opening, but accidentally trapped in the library section and spend a romantic moment together. Meanwhile, Young Joon’s brother Sung Yeon returns to Korea after 3 years abroad to visit his family. However, something is not quite right the way Young Joon greets his long waited brother home.

Episode credits

Guest stars Lee Do-yeon

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Episode 5

Ordinary Relationships

1h 4m9.5 / 10

Love and an ordinary way of life are not in Vice Chairman Lee’s repertoire, but he makes a valiant effort to profess his feelings to Mi So, his personal secretary, who feels otherwise. However, he continues on with his heart fighting off his elder brother, Sung Yeon, who suddenly appears in Mi So’s life, and finds a way to apologize to Mi So for his actions. Meanwhile, a wager on Mr. Ko suit rustles up the workplace.

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Episode 6

What’s Wrong with Vice Chairman Lee?

1h 6m9.5 / 10

Mi So requests a leave for the first time in her nine years of service. But she does not know what to do and where to go because she never had a leave before. Meanwhile, Young Joon, who can’t deal with Mi So’s absence, misses his secretary so dearly that he compromises to resolve his loneliness by joining Mi So on her day off. With great surprise, she gets a phone call from her blind date, Byung Heon, and finally hears about the boy whom she has been looking for.

Episode credits

Guest stars Park Tae-yun

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Episode 7

Memories Should Stay Buried

1h 10m9.5 / 10

Secretary Kim grows closer to Sung Yeon knowing he was the one she was with when she was kidnapped. They visit a similar area they were kidnapped hoping it will help them remember fragments of their lost memory. The sight of Secretary Kim and Sung Yeon together drives Vice Chairman Lee mad to the point he professes his love to Secretary Kim once again. The tension between the two brothers heats up, while Gui Nam does everything he can to keep his ordeal a secret by following Ji Ah to the company retreat.

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Episode 8

I Like You Too

1h 10m9.5 / 10

Young Joon invites her to his house for dinner. Although she has visited his house almost every day for the last eight years, Mi So feels totally different this time and gets very nervous. Young Joon awaits her with a surprise gift to make her heart melt. Later on, Young Joon and Mi So get to celebrate the opening ceremony of Yumyung Art Center. Now everyone’s eyes are on the Book Concert, and there Sung Yeon makes a disturbing speech. Mi So can’t help herself but worries about Young Joon only. What’s wrong with her?

Episode credits

Guest stars Choi Hee, Ko Se-won

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Episode 9

Let’s Make it Official

1h 12m9.5 / 10

Enough of the chit-chat and let the loving begin. Finally, the long-awaited official relationship between Mi So and Young Joon starts! Her faithful response to his genuine love sends him to the highest mountain peak—figuratively speaking—where he shamelessly screams, “Kim Mi So is my woman!” However, making it official does have its drawbacks. Their roles clash with each other’s desire that gets the whole office to notice, and puts Mi So in a position to set things right that leads to their first official fight.

Episode credits

Guest stars Jung Soo-young, Michal Spasov Ashminov

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Episode 10

It Was You All Along

1h 12m9.5 / 10

Everything is pointing to Young Joon—that the boy Mi So is looking for is not Sung Yeon, but him. Mi So doesn’t really understand why the whole family of her boss is lying about his real identity. To confirm her speculation, she pays a visit to Young Joon’s mother and finds a clue that might lead to her childhood hero. Meanwhile, Young Joon figures out that somehow Mi So’s sisters are not going to accept him easily. To win their hearts, he joins Mi So’s family on their vacation trip.

Episode credits

Guest stars Jung So-min, Lee Min-ki, Choi Hyeon-woo, Jeong Si-yul

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Episode 11

Why Hold Back the Truth?

1h 15m9.5 / 10

Mi So suddenly faints as the memories of being kidnapped rushes back to her. As she lays unconscious on the hospital bed, the boy from 24 years ago who was by her side on that day, tells her exactly what happened that day. He had known all along who Mi So was, and now, he begs her to wakeup. Meanwhile, Lee Sung Yeon realizes why his brother, Lee Young Joon, never pitied his suffering because he knew all along it was him who was kidnapped and not Lee Sung Yeon. Mi So wakes up and bursts into tears finally knowing the person she had searched all this time is standing in front of her. But why didn’t he tell her in the first place?

Episode credits

Guest stars Ko Se-won, Son Sung-yoon, Lee Soo-kyung, Ahn Yi-hyeon

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Episode 12

I Don't Want to Waste Away Tonight

1h 12m9.5 / 10

Young Joon can’t help himself but worries about Mi So because now she remembers what really happened when she was kidnapped. What if she starts to have nightmares from now on just like he has? Young Joon wants to take care of his lover even when she falls asleep, so he persuades her to let him move into her studio for a while. Meanwhile, Sung Yeon finds out that it was not him but his brother who was kidnapped and the reason why Young Joon had pretended to lose his memories.

Episode credits

Guest stars Ko Se-won, Lee Soo-kyung, Kil Hae-yeon, Jeong Myeong-jun

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Episode 13

Nothing Can Stop Us

1h 14m9.5 / 10

Clumsy as it may be, there’s nothing stopping Young Joon’s and Mi So’s love. But sadly, when all the time they have is not enough, Young Joon needs to go away on a business trip. They say when your eyes are away from your lover, so is the heart, but upon Young Joon’s return, their affection swells as much as they were apart. But wait, their secret relationship isn’t so secret anymore! Mi So tries her best to cover up her tracks, but it’s no use and who cares! Full steam ahead!

Episode credits

Guest stars Jo Deok-hyeon, Bae Hyeon-seong

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Episode 14

I Will Always Stay with You

1h 8m8.8 / 10

Young Joon and Mi So are now facing obstacles to overcome which they have never imagined before—Young Joon’s “girl” friend and Mi So’s father. Rumors of Mi So spread across the company that she gets ahead by her charming looks to seduce her boss, and people speak ill of her. Young Joon only worries about Mi So getting hurt by the rumors. Meanwhile, Mi So’s last day at work is coming up. Mi So is done with the handover and gets herself ready to leave Yumyung group once and for all.

Episode credits

Guest stars Jo Deok-hyeon, Bae Hyeon-seong, Jung Yu-mi, Lee Se-young, Kim Ga-yeon

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Episode 15

Wedding Bells

1h 13m8.8 / 10

In the midst of Young Joon’s nonchalant proposal, out pops up Mi So’s dad. He objects the marriage at first but soon realizes Young Joon’s sincere and genuine love for Mi So after sharing a few bottles of soju with him. He approves Young Joon as his soon-to-be son-in-law under one condition—a proper marriage proposal. Young Joon is faced with the greatest challenge of his life. Meanwhile, Sung Yeon consents Young Joon’s destiny with Mi So and even gives him tips on how he should propose to Mi So.

Episode credits

Guest stars Jo Deok-hyeon, Bae Hyeon-seong

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Episode 16

What’s Wrong with You, Kim Mi So?

1h 16m9.0 / 10finale

After the proposal, Young Joon and Mi So’s wedding preparations are on track. Young Joon wants to become a perfect husband as he promised, so he plans a perfect wedding for Mi So and himself. However, for Mi So, there is still a lot of work to be done before the wedding, so she can’t spare enough time to prepare with her groom. Young Joon is disappointed by Mi So for her lack of interest in wedding planning, but alas, Mi So prepares something special to cheer him up!

Episode credits

Guest stars Hong Ji-yoon, Jo Deok-hyeon, Bae Hyeon-seong, Lee Byung-joon

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Episode information updated Nov 14, 2026

More about What's Wrong with Secretary Kim

Cast

Park Seo-junLee Young-joon
Park Min-youngKim Mi-so
Lee Tae-hwanLee Sung-yeon
Pyo Ye-jinKim Ji-a
Kim Hye-okMadame Choi
Kim Byeong-okCEO Lee
Kang Ki-youngPark Yoo-sik
Kang Hong-sukYang Cheol

Credits

Created by
Park Joon-hwa
Written by
Paek Sun-woo, Choi Bo-rim, Jung Eun-young

Production details

Status
Ended
Series type
Scripted
Episodes
16
Original language
Korean
Original title
김비서가 왜 그럴까

Networks & production

  • tvNSouth Korea
  • Bon FactorySouth Korea
  • Studio DragonSouth Korea
  • Kakao EntertainmentSouth Korea

Themes

based on manhwabased on novel or bookbased on webcomic or webtoonbromancebusinesschaebolemployer employee relationshipnarcissist