About this season
A text message arrives from a dead friend. Since then, mysterious cases take place in a high school, which are intricately tangled with each other. Five mystery club members get together to reveal the truth of the mysterious incident at school.
Episodes (16)
E1
1. Five Transfer Students Arrive At Saera Girls’ High School
10.0Aired 29 January 2021 • 40 min
E2
2. Five Transfer Students Go To The Mystery Club
9.0Aired 29 January 2021 • 40 min
E3
3. The Mystery Club Hideout
10.0Aired 5 February 2021 • 40 min
E4
4. The Curious Case Of The Cafeteria
9.0Aired 5 February 2021 • 40 min
E5
5. The Question Number Five
9.0Aired 12 February 2021 • 40 min
E6
6. The Secret Of Mr. Dokgo
9.0Aired 12 February 2021 • 40 min
E7
7. Suicide At The School
9.0Aired 19 February 2021 • 40 min
E8
8. Hee Sun And The Green Pills
9.0Aired 19 February 2021 • 40 min
E9
9. In Hye’s New Posts
9.0Aired 26 February 2021 • 40 min
E10
10. The Past Of In Hye And Ae Ri
9.0Aired 26 February 2021 • 40 min
E11
11. In Hye And Ae Ri’s Friendship
9.0Aired 5 March 2021 • 40 min
E12
12. The Suspicious Teacher
9.0Aired 5 March 2021 • 40 min
E13
13. It’s Mr. Dokgo
9.0Aired 12 March 2021 • 40 min
E14
14. Rooms with Numbers
9.0Aired 12 March 2021 • 40 min
E15
15. The Enrichment Study Building
10.0Aired 19 March 2021 • 40 min
E16
16. Series Of Switches And Jolli-G
10.0Aired 19 March 2021 • 40 min