Park Cara is a rigid ruthless woman with double identity. To the world she's known as Park Rex, the southern mafia leader. A man with a stone-cold heart. Cara has kept her true identity as woman hidden. She was doing great until the mysterious nightcrawler, Byun Baekhyun became her personal bodyguard.      

Pain and suffering has been the chronicle of my life, until I met him. A man full of mysteries, blessed with extra ordinary abilities and the greatest warlock alive. Byun Baekhyun, the lord of the dark realm. ​​​​​

Baekhyun is a 26 years old vibrant, wealthy, young man who falls in love with Seoyeon, a 30 years old independent woman who happens to hate men due to her past experience with her ex husband.