The Kwon Clan is the most well-known gangster in South Korea meanwhile Mr Lee is the most richest bussinesman in South Korea.

Both of them are enemies. 

Soonyoung was told to eliminate Mr Lee and Jihoon was told to beware of his surrounding.

Soonyoung like to tease Jihoon because of his pink hair and little figure. Little did he know, he had might fall in love with that small guy. 

But........

Soonyoung doesnt know that the guy he was told to eliminate was Jihoon's father.