Korean coming-of-age romantic drama. In 1963, South Korea is a settled and peaceful country after the ravages of the war ten years earlier. Young teacher Kang Soo-ha (Lee Byeong-heon) travels to the rural Kang Won province to take up a job in a local school. There he meets 17-year-old Yun Hong-yeon (Jeon Do-yeon), a recalcitrant student who has been kept back in class and who slowly develops a crush on her new teacher, at the same time as Kang's enthusiasm encourages her to learn. While Yun falls deeper in love with Kang, sophisticated teacher Miss Yang (Lee Mi-yeon) gradually uses her seductive powers on him, with both teachers unaware of the effect their growing relationship is having on the young girl.