Overview
Ace NIS agent Jung Hae-seong is demoted after a mission failure. He goes undercover at a high school to locate King Gojong's missing gold, meeting his teacher Oh Soo-ah, who sees him as her lost first love, stirring old heartbreak.
Cast
Kim Min-ju
as Lee Ye-na
Yun Chae-bin
as Yun Chae-rin
Jin Ki-joo
as Oh Su-ah
Kim Young-ah
as Im Chung-ha
Lee Hyun So
as Han Seung-jae
Kim Shin-rock
as Seo Myung-ju
Kim Sun-min
as Ji Hyeon-jun
Seo Kang-joon
as Jeong Hae-sung
Yoon Ga-i
as Park Mi-jung
Crew
Director
Choi Jeong-in
Writer
Im Young-bin
Cast Similarity
Tastefully Yours
1 shared cast member
Shared:
Kim Shin-rock
My Dearest Nemesis
1 shared cast member
Shared:
Kim Young-ah
Love Scout
1 shared cast member
Shared:
Yoon Ga-i
Juvenile Justice
1 shared cast member
Shared:
Kim Young-ah
Scarlet Heart: Ryeo
1 shared cast member
Shared:
Jin Ki-joo
Study Group
1 shared cast member
Shared:
Kim Young-ah
All of Us Are Dead
1 shared cast member
Shared:
Yoon Ga-i
Moon River
1 shared cast member
Shared:
Yun Chae-bin
Family Matters
1 shared cast member
Shared:
Yoon Ga-i
Love In The Big City
1 shared cast member
Shared:
Lee Hyun So
Topic Keyword Similarity
My Demon
3 shared keywords
Topics:
comforting, romance, romcom
You and I Are Polar Opposites
2 shared keywords
Topics:
romance, romcom
Tomo-chan Is a Girl!
2 shared keywords
Topics:
romance, romcom
My Boss
2 shared keywords
Topics:
romance, romcom
Welcome to Samdal-ri
2 shared keywords
Topics:
romance, romcom
A Dream Within a Dream
2 shared keywords
Topics:
romance, romcom
True Beauty
2 shared keywords
Topics:
romance, romcom
My Dearest Nemesis
2 shared keywords
Topics:
romance, romcom
Astro Note
2 shared keywords
Topics:
romance, romcom
The Jewel of Section E
2 shared keywords
Topics:
comforting, romcom
Keywords
undercover agent
romcom
romance
comforting
Similar Shows
My Dearest Nemesis
2025
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Undercover Miss Hong
2026
Love Scout
2025
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Shared people: 1
The Recruit
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Shared people: 1
Study Group
2025
Shared people: 1
Crash Course in Romance
2023
Shared keywords: 2
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Details
- First Aired
- February 21, 2025
- Status
- Returning Series
- Episode Runtime
- 70 minutes
- Origin
- KR
- TMDB Votes
- 51