So-Ah works as a teacher at a local school. She was curious about Boo Young-Suk, a student with a sinister aura who is always present on the attendance list but no one calls him by name. The more she tries to get Boo Young-Suk back to school, strange things begin to happen at school.
κΉμν
as Jung So-ah
Jung Yoon-suk
as Boo Young-suk
Lee Gyu-hyeon
as Choi Ji hun
Yoo Na-gyeol
as Seon Mi na
Karin
as Ji Yun mi
Yeonge
as Hae Ju (Ep. 4)
