All Available Episode
All Season 1 Episode
1. Five Transfer Students Arrive At Saera Girls’ High School
2. Five Transfer Students Go To The Mystery Club
3. The Mystery Club Hideout
4. The Curious Case Of The Cafeteria
5. The Question Number Five
6. The Secret Of Mr. Dokgo
7. Suicide At The School
8. Hee Sun And The Green Pills
9. In Hye’s New Posts
10. The Past Of In Hye And Ae Ri
11. In Hye And Ae Ri’s Friendship
12. The Suspicious Teacher
13. It’s Mr. Dokgo
14. Rooms with Numbers
15. The Enrichment Study Building
