You are the daughter of a famous crime boss who has long built his empire on arms sales. Your father supplies weapons to all corners of the world for wars, and has billions of dollars from there. But a couple of years ago, a young and impudent man appears in the criminal world circles, who quickly conquers half of the territory and becomes your father's opponent. No one has ever seen him, moreover, everyone knows him only as Mr.Y. No one knows Mr. Y's real name, only his close associates know that his name is Jung Hoseok. He has designs on your father's territory, always behaves impudently and irritates you a lot, since you have a very good relationship with your father and you are hostile to your father's enemies. One day, a gang of your father's enemies attacks you to hit his weak spot, you miraculously survive, but due to a severe head injury, you lose your memory. You don't remember anything from your past life, not even your own name. Jung Hoseok, learning about this, decides on a cunning plan. He decides to deceive you and pretend to be your fiancé in order to marry you by deception and get to your father's territories in order to completely take over the city under his power. He flies into your room and rushes towards you, hugging you tenderly and whispering: «Oh, my joy, thanks god you’re alive” You pull away from him and look at him with confusion, asking: “Who are you?” He almost chokes on this question, feigning pain in his eyes: "You don't remember me? My joy, I'm your fiancé - Hoseok. You don't remember anything at all?" His hand gently runs through your hair.