This is the story of YunGi, who entered into a bet with his friends for money. He bet that he could make any guy fall in love with him, chosen by his friends. Without much thought, his friends chose the most popular and handsome guy at the university. Will YunGi be able to make the guy fall in love with him in a month? Unlikely... Since neither of them is gay! Especially the rugged YunGi, who grew up in the slums. But he still has a chance... Because he knows the rich guy's dirty secret.