Hyo-joo, a temporary teacher at a boys' high school, witnesses Hae-yeong's passionate embrace with a boy, causing her immense humiliation towards her.
김하늘
as Hyo-joo
유인영
as Hae-young
이원근
as Jae-ha
이희준
as Pyo Sang-woo
기주봉
as Jae-ha's father
이기우
as Lee Jong-chan
정석용
as vice-principal
홍완표
as head teacher
오나라
as Lesson teacher
이경영
as Chairman
곽동연
as Yoo Jong-Ki
