Baekhyun is a heartless Mafia, so it seemed. He sees life differently, is always money-conscious, and never gives a damn about anyone but himself. Love is forbidden in his life after his previous experience until his driver accidentally knocked down a poor girl.

Lee Areum, a young and very beautiful lady, faced with pain and sorrow, had long giving up on life after her baby girl was forcefully taken away from her right after birth. Her existence was filled with sadness, and she shut out the world away completely. But her life took a drastic change when she met the little warrior princess Oh Nari and her lovely Dad Oh Sehun.

Kim SeoYeon never knew that a one night affair with Baekhyun a CEO and a single Dad would change her life forever.

Lee Yumi was unfortunately sold to the most dangerous southern mafia boss Byun Baekhyun, but things took a drastic turn. For the sake of revenge and to save his reputation, Baekhyun forcefully got married to her. Little did he know that his heart will betray him.

Life has never been fair to Wang Byeol after the death of her parents. She ended up living as a maid to her stepmother and stepsister with so much suffering inflicted on her that she developed Haphephobia. What is the fate of Byeol when her high school arch enemy, Byun Baekhyun turned out to be her stepsister's fiancé?