Undercover High School · SEASON 1
Hye Seong's Father's Notebook
Episode 6 · 2025-03-08

- Action & Adventure
- Comedy
- Drama
Episode overview
The 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 away from the mission, and he takes time off. However, he resolves to continue but returns only to discover Su A witnessed it all
70 minutes
Season 1 episodes
1. The Emperor's Lost Gold2025-02-21
2. Spooky Stories2025-02-22
3. Ghost Story Riddles2025-02-28
4. Joining the Student Council2025-03-01
5. Student Council2025-03-07
6. Hye Seong's Father's Notebook2025-03-08
7. The 24th Anniversary of Byeongmun High School2025-03-14
8. The Plan for VIP Students2025-03-15
9. The Mathematics Teacher2025-03-21
10. Retribution2025-03-22
11. The Devastating Truth2025-03-28
12. Where The Stars Lead2025-03-29