“Marry my grandson. And kill the entity possessing his body.” To find her missing parents, she must marry a possessed man! One day, Lee Heeseo, a renowned exorcist, receives a marriage proposal from the chairman of the global medical conglomerate GM Group. She accepts this suspicious deal under the condition that he helps her find her parents, who disappeared during her childhood. Overnight, Lee Heeseo assumes a false identity as a 'French ballerina' to marry Kim Jeeon, the sole heir of GM Group. However, as luck would have it, her true identity is exposed on her very first night by the 'ghost' possessing Kim Jeeon... “I expected you wouldn't be ordinary, but this is beyond imagination. Are you bold, or just reckless? Knowing I'm possessed by a ghost, you fearlessly waited for me alone like this... Aren't you a bit too fearless?” A fake bride trying to exorcise the spirit from her fake husband, and a 'god-possessed' groom who went along with the marriage despite knowing her plot—their sweet yet bloody newlywed life gradually grows perilous. Will Lee Heeseo be able to successfully fulfill her contract? “If I were the real Kim Jeeon, would you have treated me kinder than you do now?” “What?” “You wouldn't have.” She had hit the nail on the head. Even if he truly were Kim Jeeon, she wasn't a gentle person to begin with, and moreover, she had no immunity to such a sly, smooth-talking man. “If you hadn't taken over that body in the first place, we would never have met like this. Stop talking nonsense.” “We wouldn't have met...” Heeseo retorted triumphantly. However, the possessed man's reaction always defied her expectations. “I'm glad you said that, Heeseo.” What kind of nonsense was this? Heeseo lost all will to reply. Glad to meet an exorcist, of all things, while being a ghost? How on earth was she supposed to counter that? “To think that I'm in this body precisely so I could meet you. I'm truly glad.” Jeeon smiled brightly and gently grasped her wrist. It was an alluring smile carrying a sweet fragrance of flowers. A woman born carrying a tiger, and a man cursed by a snake. The secrets tangled like a skein of yarn begin to unfold.