'Undercover High School' Seo Kang-joon is accused of being a perpetrator of school violence and is facing expulsion.

The third episode of the MBC Friday-Saturday drama 'Undercover High School' (planned by Namgoong Seong-woo / written by Lim Young-bin / directed by Choi Jeong-in / produced by Neo Entertainment, Slingshot Studio), broadcast on the 28th, depicted Jung Hae-seong (played by Seo Kang-joon) drawing closer to the gold bullion.

On that day, after confirming the reality of the old ballet dancer’s urban legend, Jung Hae-seong said to Lee Dong-min (Park Jin-woo), who was about to report it, 'Don't report it. It's not a skeleton. It's a model.' At that moment, principal Park Jae-moon (Park Jin-woo) entered the room, and Jung Hae-seong explained, 'It's a skeleton model. I came back after checking with Dong-min about the urban legend. It's an old urban legend,' adding, 'I apologize for entering without permission. I will reflect on this.' To this, Park Jae-moon replied, 'Be careful next time.'

Jung Hae-seong then told his team members, 'This is a scene that faithfully recreates the old ballet dancer’s urban legend. The seal on this key matches exactly with that of Seo Byeong-mun’s seal. What to note is that if interpreted, it is the beginning of the gold bullion,' suggesting a connection between the gold bullion and the urban legend.

Chairman Seo Myung-joo (Kim Shin-rok) also heard the urban legend story from Park Jae-moon and said, 'I never imagined it. Oh, that’s so funny. Anyway, you’re really a great person. Really a unique gentleman. An urban legend about the school,' and added, 'Let’s just wait and see. The ones who know the school best are the students, so perhaps the matter can be resolved in an unexpected way.'

Meanwhile, Oh Soo-ah learned that Park Tae-su (Jang Seong-beom) was the perpetrator who bullied Lee Dong-min (Shin Joon-hyang). Until now, mistakenly thinking it was Jung Hae-seong, she witnessed Park Tae-su's wrongdoing and angrily exclaimed, 'Teacher, I saw everything. Park Tae-su, go to the counseling office. Can't you hear me? Should I call your parents?'

However, Park Tae-su sneered, 'Oh, this is so annoying. Teacher, just pretend you didn’t see. If you’re a temporary teacher, act like one. Teacher, I’m letting it slide today because I look good. Don’t do that again next time.' Oh Soo-ah asked, 'Dong-min, have you been bullied by Tae-su during this time? Your grandmother called. Her ID was also with Tae-su,' but Lee Dong-min evaded the question, saying, 'No, it was just a joke with Tae-su, and I’m fine. I’m sorry for causing trouble.'

Later, Oh Soo-ah ran into Jung Hae-seong at a convenience store and asked, 'You knew, didn’t you? The reason I couldn’t say it even though Tae-su and Dong-min knew was because I didn’t trust them,' and apologized, 'I'm sorry for misunderstanding about your grandmother’s ID and for not catching on to your situation quickly.'

Lee Dong-min's grandmother, whose identity was stolen, was arrested by the police on charges of being the mastermind behind an illegal gambling website. Learning about this, Jung Hae-seong noted, 'There must be a connection to Park Tae-su. The grandmother's ID. If this goes on, she might be arrested,' and requested help from Oh Soo-ah, saying, 'This is a serious crime, and someone needs to step in.'

The next day, Oh Soo-ah anonymously exposed Park Tae-su's school violence and illegal gambling on the school bulletin board. As a result, meetings with the chairman and parents were held, but Lee Dong-min, threatened by Park Tae-su, falsely claimed, 'The post on the bulletin board is fake. Tae-su didn’t hit me. The real person who hit me is Jung Hae-seong.' Later, despite Oh Soo-ah's persuasion, he refused, saying, 'Please don’t do anything.'

Meanwhile, Jung Hae-seong faced expulsion as the school violence committee was held. While Oh Soo-ah bought time, Jung Hae-seong appeared on a motorcycle, capturing everyone’s attention. Seeing this, Oh Soo-ah said, 'Crazy jerk,' and Jung Hae-seong brought in the real mastermind behind the illegal gambling site, asking, 'Shall we get started?' which heightened curiosity about the plot.

[Photo] 'Undercover High School' broadcast screen capture

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