The story of 14-year-old children who have experienced puberty as hot as the temperature of Daegu in the 2002 World Cup.

Moon Woo-jin
as Kim I Jun

Park Seo-kyung
as Han Yeo Reum

Choi Hyeon-jin
as Jung Ji Uk

Kim Ji-won
as Choi Min Ji

Go Seung Bo
as Gyeong Tae

Jung Hee-tae
as [I Jun's uncle]

Heo Dong-won
as [I Jun's father]

Jung Yi-rang
as [Yeo Reum's mother]

Jeon Seok-chan
as [Yeo Reum's stepfather]

Kim Kwang-kyu
as [Principal]