When Jisung moves to the city for university, he accidentally crosses paths with Minho, a man who thrives in the underground world of crime. Minho doesn't believe in God, but he believes in Jisung. The innocent church boy who smiles too sweetly, who prays too often, who walks around unaware of the danger surrounding him. Minho, the devil in disguise, wants Jisung to see him, fear him, want him. But the more Jisung resists, the more obsessed Minho becomes. He'll do anything to make Jisung his--even if it means destroying every piece of Jisung's angelic world.

"I know that you hate me too much!!" "If I hate you... Then why did I choose you..?" "Huh..?!" Minho and Jisung are in same college. They hate each other very much. But They had to get married for their company. Everyone had that question, "How will these opposites stay together without killing each other?" Or maybe they'll fall apart after Jisung will know the secret of Minho being a mafia?