Yong-soon is an 18-year-old high school student. She falls in love with her gym teacher, but she thinks her teacher might have a girlfriend. Yong-Soon and her friends try to find out whether he does have a girlfriend, but they can't find any clues. Making things worse, her father brings a new stepmother from Mongolia.
이수경
as Yong-soon
최덕문
as Father
박근록
as PE Teacher
김동영
as Bbak-gyu
장햇살
as Moon-hee
Choi Chan-sook
as Che-yook's Mother
김자영
as Moon-hee's Mother
Park Chul-min
as Chief of School Administration
김민재
as Music Teacher
최여진
as English Teacher
김응수
as Principal
Kim Han-na
as Athletic Club Senior
