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.

Cast:Lee Soo-kyung, Choi Deok-moon, Park Keun-rok, Kim Dong-young, Jang Haet-sal, Choi Chan-sook,

Genre:Drama, Comedy,

country:South Korea,

Production:ATO, Lotte Entertainment, Lotte Cinema Arte,