Ugly Duckling Ms. Maeng Posters: Lee Sun Bin Joins Korea’s Most Secretive Exam Lockdown in a Comedy Hitting Theaters October 28

Imagine being locked away for 40 days to write the toughest exam in the country, and you only got the job by mistake. That’s the premise of Ugly Duckling Ms.…

By Reetam Bodhak

October 13, 2026

2 min read

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Imagine being locked away for 40 days to write the toughest exam in the country, and you only got the job by mistake. That’s the premise of Ugly Duckling Ms. Maeng, a new Korean comedy film. Its latest character posters borrow the look of a famous exam-prep book cover, and they’re packed with jokes.

The Premise

Maeng Bo Ram (Lee Sun Bin) is a Korean language teacher from a small provincial town. Due to an administrative error, she lands on the team that creates Korea’s College Scholastic Ability Test, also called the CSAT or Suneung. The question-setting headquarters is sealed for 40 days while the committee works in total secrecy to produce questions free of typos and disputes. Chaos, naturally, follows.

Ugly Duckling Ms. Maeng: Meet the Characters

Actor	Character	Role	Poster Vibe (paraphrased)
Lee Sun Bin	Maeng Bo Ram	Gen Z Korean language teacher	Confident pose; insists the exam must be fair no matter what
Yoo Jae Myung	Moon Joo Yeol	Head of the Korean language question-setting committee	Sharp glare over his glasses; calls his scheming “strategic thinking”
Kim Young Min	Park Kyung Tae	Self-proclaimed righteous head of the review committee, the “walking red pen”	Steely look; sees far too many problems with the questions
Jeon Seok Ho	Ki Jun Soo	Operations committee employee	Bright, office-politics smile; urges working well, not just hard

Why the Posters Work?

The design parodies a popular CSAT study-book cover, a sight every Korean student knows well. Each witty tagline hints at a personality and at the mishaps waiting inside the sealed headquarters.

Bo Ram is the passionate newcomer with principles.
Joo Yeol brings power-player energy with a bumbling side.
Kyung Tae is the perfectionist nobody can satisfy.
Jun Soo adds a dose of workplace realism.

Why Watch It?

A fresh setting. The secretive world of exam-making is rarely seen on screen.
A strong comic cast. Veteran scene-stealers pair with Lee Sun Bin’s lead.
Universal relatability. Anyone who has sat an exam will recognize the pressure and the absurdity.

While you wait, catch Lee Sun Bin in Boyhood and Yoo Jae Myung in Love Me on Viki.