徐康俊 Seo Kang-Jun 秦基周 Jin Ki-Joo 金新绿 Kim Shin-Rock 全裴修 Jeon Bae-Soo 

国家情报院特工郑海成（徐康俊 饰）在一次作战中闯出超大型事故而被降职，为了追查高宗皇帝失踪的金条下落，他伪装成高中生潜入炳文高中，不仅结识了一群好朋友，还意外与多年前的初恋吴秀雅（秦基周 饰）重逢，然而此时的吴秀雅却是他的老师，郑海成究竟能否在完成任务的同时，收获友情与爱情呢。

Jung Hae Seong, an elite NIS agent faces demotion because of an incident that occurred during a mission. He is assigned to an operation to find the location of King Gojong’s missing gold bars. For this task, he hides his identity and goes undercover as a student at the prestigious Byeongmun High School, a school deeply corrupted by its obsession with wealth and power. There, he meets his homeroom teacher O Su A. Su A is a contract Korean history teacher with an upright personality and a strong affection for her students. She dreams of becoming a full-time teacher at Byeongmun High, but with Hae Seong, a new transfer student in her class, whom she finds herself entangled with, she quickly realizes that the path to achieve her goal won't be so easy. As Hae Seong navigates high school life, he uncovers the dark truth behind Byeongmun High. Teaming up with others, he fights back against corruption. His undercover operation, filled with excitement, is about to begin! 

Language : Korean
Subtitles : English / Chinese
No of Disc: 3
Region Code : All / Worldwide

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