Hae-Seong returns to his school and he becomes an agent. But he’s bullied by Tae-Soo. He faces the fate that being expelled from the school in Undercover High School Episode 3. He catches the bad guy Sang-Tae for fighting it back. He rides a motorcycle and he comes to the school. But he doesn’t expect that he got some fans.
Episode 3
Hae-Seong finds a human skeleton from the basement. Fortunately, the skeleton is just a model. He finds a key then. Jae-Moon walks into the room. Hae-Seong tells a lie to the principal that they were just interested in the old building’s rumor. Jae-Moon lets Hae-Seong and Dong Min leave. He reports it to Myeong-Joo.
Myeong-Joo orders Jae-Moon not to interfere with Hae-Seong. She thinks the ones who know the school are students. Hae-Seong takes the key to return to NIS. The design on the key is same as Byung-Moon’s seal. The words indicate that the gold bar is related to weird rumor. They will find the gold bars if they solve the puzzle.
Jin-Sang gives the broken artifact to Hyung-Bae. It confirmed that it’s a fake. Hyung-Bae puts the report in the shredder. He decides to conceal the secret. Hae-Seong doesn’t know the truth. He visits Dong Min. He asks him to tell him about other weird rumors.
Dong Min tells Hae-Seong a story about seat clock. Everyone thinks the clock doesn’t make a sound because of the malfunction. But Dong Min heard that the clock rings when someone is at the school in the evening. There’s a pair of bloodshot eyes appearing once the clock rings. Hae-Seong is listening to the story. Soo-A pinches his ear and she takes him outside.
She questions him why he took away the ID of Dong Min’s grandma. Soo-A got a call from Dong Min’s grandma Bok-Sun. Bok-Sun claimed that her ID was taken away by Hae-Seong. She asked Soo-A when Hae-Seong will return it. Hae-Seong realizes that Tae-Soo did it. He knows Dong Min doesn’t wish others to know that he got bullied. He doesn’t tell the truth to Soo-A.
It causes Soo-A to order him to stay in the school after school. He sends a message to her. He tells a lie to her that he didn’t turned off the gas at home. He doesn’t want to go to see her. He goes to the security room. He discloses that the one who appeared in the old building and attacked them was Hyun-Ho. He took a photo of Hyun-Ho’s footprints after he fled.
Hyun-Ho admits that it was him after he saw the evidence. He reveals the stray cat ran into the old building when he fed the stray cat. He followed the animal and he found a human skeleton from under the floor. He was startled and he saw someone else outside. He hid under the floor. He tried to come out from the floor after the person left. But he was stuck. It caused that he showed his upper body. He didn’t know the person didn’t leave. The person was Dong Min.
Hyun-Ho sneaked into the old building for fixing the floor. He worried that he will be caught. So he attacked Hae-Seong and he fled. Hae-Seong hears the story. He understands that it’s just a misunderstanding. He tells Hyun-Ho that the skeleton is just a model. Hyun-Ho feels relieved.
Dong Min knows his grandma’s ID was taken away by Tae-Soo. He asks Tae-Soo for the ID. Tae-Soo intends to leave the ID on the floor. He steps on Dong Min’s hand when Dong Min tries to get the ID. Soo-A sees Tae-Soo bullying Dong Min. She asks Dong Min if it happens all the time. He doesn’t dare to admit it. Tae-Soo is arrogant to tell Soo-A to pretend she didn’t see it if she wants to keep her job. Dong Min apologizes to Soo-A for getting her involved. He leaves in hurry.
Dong Min returns home. He sees Hae-Seong and his grandma. Hae-Seong ran into Bok-Sun on the street. He found out that her cartons dropped to the ground. He helped her and he took her home. Bok-Sun learns that Hae-Seong is Dong Min’s friend. She takes out the cash and he tells Hae-Seong to buy something tasty with the cash. She wishes him to get along with Dong Min.
Hae-Seong gives his number to Dong Min before he leaves. He tells him to contact him if he needs his help. It’s Dong Min’s first time to get the friendship. He feels warm and grateful. Soo-A runs into Hae-Seong in a convenience store. She apologizes to him that she wronged him. She feels shame that she didn’t find what happened to Dong Min early.
Hae-Seong gives Bok-Sun’s cash to Soo-A. Although there’s very little money, it means a lot. He wishes her to become the teacher who’s qualified to accept the cash. She notes that he took out the beans from the food. She remembers her childhood friend did the same thing. She doesn’t expect that she encountered two people who have same habit. The two walk out of the convenience store.
Hae-Seong gets a call from Dong Min who asks Hae-Seong to help him. Hae-Seong is told that Dong Min’s grandma was arrested by the cops. He and Soo-A go to the police station. The police found Bok-Sun’s name when they looked into the gambling site. Bok-Sun was taken into the police station.
Soo-A posts what Tae-Soo did on the school website for saving Dong Min. Public opinion is against Tae-Soo. Hae-Seong catches the chance to go to look into the seat clock. He puts the key in the lock. He tries to open it. Myeong-Joo appears suddenly. She asks him why he did it. He tells a lie to her that he was drawn by the weird rumor. She smiles to tell him to visit her if he has any question.
Hae-Seong leaves. Myeong-Joo looks into the seat clock. She doesn’t find anything. She invites the parents of both sides to the school for dealing with the rumor. Dong Min’s grandma is still at the police station. Soo-A becomes Dong Min’s guardian.
Tae-Soo’s father Min-Cheol thinks the covers online are lies. He asks Dong Min to tell him the truth. Tae-Soo threatens Dong Min and he asks him to return the innocence to him. Soo-A encourages Dong Min. Dong Min tells everyone that the articles are fake. Tae-Soo didn’t bullied him. The real one who beat him was Hae-Seong.
Soo-A and Dong Min are in the office alone. She asks him why he told a lie. He remembers Tae-Soo threatened him when he carried a knife. Tae-Soo told Dong Min that his grandma will stay in the prison all her life if he doesn’t wrong Hae-Seong.
Dong Min doesn’t tell the truth to Soo-A. He asks her not to step in the case. He worries that she will be hurt as well. Hae-Seong hears that Dong Min wronged him. He finds the guy. He wants to confirm if Dong Min was threatened by Tae-Soo. Dong Min admits it. He hates himself that he has lived at the bottom of the social ladder. Tae-Soo did many evil things. But he can live a happy life.
Dong Min thinks Hae-Seong doesn’t know his feelings because he didn’t experience it. Hae-Seong listens to what Dong Min says. He can only tell the boy that it wasn’t his mistake. Dong Min cries. He doesn’t know Hae-Seong had same dark days like him.
Hae-Seong was insulted by his classmates that he’s an orphan. He was furious to fight it back. But he got punished by the school. Seok-Ho had helped Hae-Seong. But he got involved. Hae-Seong took off his school uniform. He swore not to go to school. Seok-Ho understood Hae-Seong’s feelings. He supported him to study at home. Hae-Seong ran away from the suffocating campus environment.
Dong Min has same nightmare. Hae-Seong decides not to let the boy take his step. He contacts Young-Hoon and he asks him to look into Tae-Soo. The next day, the school posts a notice. They are going to have a meeting to decide if they need to drop Hae-Seong from the school.
Hae-Seong gets a call from Young-Hoon. Young-Hoon looked into Tae-Soo. He found out that the boy was close to Sang-Tae. The guy bought IDs for managing his gambling sites. The meeting is going to begin. Soo-A calls Hae-Seong. She asks him to come. But he asks her to help him delay the time.
SEE ALSO: Undercover High School Episode 2 Recap: Jung Hae-Seong Finds A Human Skeleton from the Basement
The parents and the teachers are ready. Min-Cheol presses Myeong-Joo. He claims that he needs to participate in another meeting. He asks her to begin the meeting. She has to ask Soo-A to bring Dong Min and Tae-Soo. Gwang-Doo questions Dong Min the last time if Hae-Seong bullied him.
Dong Min claims again that everything was done by Hae-Seong. Gwang-Doo announces to drop Hae-Seong out of the school. He’s going to use the gavel. Soo-A is flustered to stand up. She makes a bad excuse and she asks everyone if they want to have lunch. He scolds her for bringing trouble. He wants to use the gavel again. But Hae-Seong takes a person to the school.