Oh Sehun is Korea's most wanted criminal for being the notorious leader of a Mafia gang. While threatened by the presence of an investigator called 'Special Agent J', Sehun finds comfort in his favourite club. More notably, the new club worker who he recently has eyes on. 

Park Chanyeol is just another university student living with his dormmate Do Kyungsoo and working part-time to earn savings. You can say that Chanyeol's life is as normal as one can be, but, is it really though? Especially after meeting a boy named Byun Baekhyun?