Go Nam-soon, a young boy, constantly gets bullied by a group in his class. Later, one of his old rivals joins his school. Eventually, they are able to sort out their differences.
Lee Jong-suk
Go Nam-soon
Kim Woo-bin
Park Heung-soo
Jang Na-ra
Jung In-jae
Choi Daniel
Kang Se-chan
Park Se-young
Song Ha-kyung
Jeon Soo-jin
Kye Na-ri
Uhm Hyo-seop
Uhm Tae-woong
Kwak Jung-wook
Oh Jung-ho
Lee Yi-kyung
Lee Yi-kyung
Oh Young-shil
Yoo Nan-hee
Park Hae-mi
Im Jung-soo
Jung Woo-yeon
Lee Kang-joo
Choi Chang-yub
Kim Min-ki
Lee Han-wi
Woo Soo-chul
Shin Hae-sun
Shin Hye-sun
Kim Dong-seok
Kim Dong-seok
Lee Jong-suk
Go Nam-soon
Kim Woo-bin
Park Heung-soo
Jang Na-ra
Jung In-jae
Choi Daniel
Kang Se-chan
Park Se-young
Song Ha-kyung
Jeon Soo-jin
Kye Na-ri
Uhm Hyo-seop
Uhm Tae-woong
Kwak Jung-wook
Oh Jung-ho
Lee Yi-kyung
Lee Yi-kyung
Oh Young-shil
Yoo Nan-hee
Park Hae-mi
Im Jung-soo
Jung Woo-yeon
Lee Kang-joo
Choi Chang-yub
Kim Min-ki
Lee Han-wi
Woo Soo-chul
Shin Hae-sun
Shin Hye-sun
Kim Dong-seok
Kim Dong-seok
Lee Jong-suk
Go Nam-soon
Kim Woo-bin
Park Heung-soo
Jang Na-ra
Jung In-jae
Choi Daniel
Kang Se-chan
Park Se-young
Song Ha-kyung
Jeon Soo-jin
Kye Na-ri
Uhm Hyo-seop
Uhm Tae-woong
Kwak Jung-wook
Oh Jung-ho
Lee Yi-kyung
Lee Yi-kyung
Oh Young-shil
Yoo Nan-hee
Park Hae-mi
Im Jung-soo
Jung Woo-yeon
Lee Kang-joo
Choi Chang-yub
Kim Min-ki
Lee Han-wi
Woo Soo-chul
Shin Hae-sun
Shin Hye-sun
Kim Dong-seok
Kim Dong-seok