That summer, I met my first love.
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.
Lee Soo-kyungYong-soon
Choi Deok-moonFather
Park Keun-rokPE Teacher
Kim Dong-youngBbak-gyu
Jang Haet-salMoon-hee
Choi Chan-sookChe-yook's Mother
Kim Ja-youngMoon-hee's Mother
Park Chul-minChief of School Administration
Kim Min-jaeMusic Teacher
Choi Yeo-jinEnglish Teacher
Kim Eung-sooPrincipal
Kim Han-naAthletic Club Senior
Kim Ha-yeonYoung Yong-soon
Kim Young-jaeBirth Mother's Old Love
Lee Na-raBirth Mother
