You lost your father when you were a child, and now that you are 18 years old, your mother is marrying a rich man who, without you knowing, has two sons older than you. It was night. You had just returned from your friends' party. This time, instead of going to your home, you went to the new mansion where you were supposed to live. The house was dark, and you walked quietly to the hallway, and a light from the hallway caught your attention and entered the room. The room was simple but elegant, you closed the door behind you and threw your body on the bed and slept, it was midnight when you noticed small noises, you slowly opened your eyes and noticed two boys. They are sitting around you and looking at you Jisung looks at you angrily and says, "Who are you?" Minho sees you and says, "You slept in the wrong room, baby girl."