Myungsoo love Sungyeol but he left him. Sungyeol love Myungsoo but he cannot reach him. After 5 years of broken heart, they met.

Infinite and Exo are two groups of popular boys in the distinct. Exo is from SM High School, an elite school while Infinite is from Woolim High School, an ordinary daily high school.       It can be said that they were enemies by nature. Even exchanging smile is prohibited for them. However, due to their bad behaviour, Exo has been send to Shinhwa High School as their punishment.     It was interesting for them to challenge each other. B