Set in the beautiful Kang Won province, the year is 1963 and an uncomplicated time in post-war Korea. Newly qualified teacher Kang Soo-ha (Lee Byeong-heon) takes his very first class in the small village school and approaches his new job with verve and sincerity. Yun Hong-yeon (Jeon Do-yeon) is in the 6th grade but at 17, she is much older than her fellow classmates. Kang's effervescent teaching methods soon inspire Hong-yeon to learn however, she also develops a heart wrenching crush on her new teacher. All the while, sophisticated teacher Miss Yang (Lee Mi-yeon) unwittingly steals the heart of Kang who is in turn, oblivious to the attentions of his student. Impressive and award winning performances in this touching tale of innocent love.