EP1 - Five Transfer Students Arrive At Saera Girls’ High School EP2 - Five Transfer Students Go To The Mystery Club EP3 - The Mystery Club Hideout EP4 - The Curious Case Of The Cafeteria EP5 - The Question Number Five EP6 - The Secret Of Mr. Dokgo EP7 - Suicide At The School EP8 - Hee Sun And The Green Pills EP9 - In Hye’s New Posts EP10 - The Past Of In Hye And Ae Ri EP11 - In Hye And Ae Ri’s Friendship EP12 - The Suspicious Teacher EP13 - It’s Mr. Dokgo EP14 - Rooms with Numbers EP15 - The Enrichment Study Building EP16 - Series Of Switches And Jolli-G