Undercover High School (2025)
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.
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Episodes
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1. The Emperor's Lost Gold2025-02-21 · 1h 11mAfter a botched operation puts Hae-sung and his team in serious jeopardy, the only way for him to salvage his career at the NIS is to accept an assignment that seems almost hard to
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2. Spooky Stories2025-02-22 · 1h 7mHae-sung comes dangerously close to blowing his cover while searching for the hidden gold in Byeongmun High School's eerie old building, barely escaping detection by Soo-ah, his sh
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3. Ghost Story Riddles2025-02-28 · 1h 9mHae-sung uncovers a crucial clue hidden within the old building, but Chairwoman Seo quickly learns its potential connection to the elusive gold bars. Sensing the connection, she ke
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4. Joining the Student Council2025-03-01 · 1h 6mHae-sung attends the anti-bullying committee session with a key witness who clears his name, while Dong-min finally finds the courage to stand up for himself. With his name vindica
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5. Student Council2025-03-07 · 1h 8mHae Seong and the team grow increasingly concerned that Su A's suspicions could threaten his undercover mission. However, Hae Seong defies the odds and successfully gains a spot in
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6. Hye Seong's Father's Notebook2025-03-08 · 1h 10mThe school's security guard dies, leaving Hae Seong a notebook belonging to his missing father. The revelation is shocking, and he storms the NIS for answers. The answer pushes him
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7. The 24th Anniversary of Byeongmun High School2025-03-14 · 1h 5mHae Seong is caught off guard when he recognises Su A's childhood name, Bong Ja, which stirs memories of his first love and distracts him from his focus. Despite the emotional turm
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8. The Plan for VIP Students2025-03-15 · 1h 10mAfter uncovering the possibility of a mole within the NIS, Hae Seong becomes increasingly distrustful of those around him, causing him to question the mission's integrity. Meanwhil
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9. The Mathematics Teacher2025-03-21 · 1h 8mAs Su A recovers in the hospital following the attack during the break-in, Hae Seong and the team uncover the culprit: Lee Jun Ho, the mathematics teacher. When Hae Seong detects h
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10. Retribution2025-03-22 · 1h 7mTo everyone's shock, Seo Myeong Ju returns to the school. Unimpressed by Hae Seong, she expels him and demonstrates her power by dismantling his team. However, refusing to back dow
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11. The Devastating Truth2025-03-28 · 1h 8mThe gold bars vanish just as they are within reach, and Seo Myeong Ju suspects Hae Seong has them. In the vault, Hae Seong makes a heartbreaking discovery of his father's remains.
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12. Where The Stars Lead2025-03-29 · 1h 9mDespite getting badly injured, Hae Seong manages to call Su A and his team. They conclude that the only evidence they can secure is the flash drive that contains the voice recordin
Cast
Seo Kang-joonJeong Hae-sung
Jin Ki-jooOh Su-ah
Kim Shin-rockSeo Myung-ju
Kim Min-juLee Ye-na
Yoon Ga-iPark Mi-jung
Kim Young-ahIm Chung-ha
Lee Hyun SoHan Seung-jae
Yun Chae-binYun Chae-rin
Kim Sun-minJi Hyeon-jun
Kim Seung-beomKim Ho-jin
Kang Pil-junSon Beom-SikImages
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