Yoo Ri is the niece of EXO's Manager. Her Parents died in a car accident when she was 4. Unfortunately her Uncle is his dad's closest brother, so they adopt Yoo Ri. When his Uncle's wife and his son goes to States, Yoo Ri is always alone at their home because of his Uncle's busy schedule. To Not worry, her Uncle decided to get her and live in a dorm. Not knowing that she will have a 12 guy roommates. Will Her Life change after that? Who are the guys that fall for her charismatic charm?