Yn is a simple college student who is scared of love and marriage because of her parents and also lost her big brothers and her sister who treats her as a princess. Jungkook who is pampered by his parents, his sister, his brothers. He believes in love and falls in love with YN. Can he be able to win Yn's heart and make her fall in love with him. Will Yn meet her lost cousin brothers and sister. What will happen?