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.

casts

Lee Soo-kyung

Choi Deok-moon

Park Keun-rok

Kim Dong-young

Choi Chan-sook