Kang Hye Na, the only successor of Kang-san Group, is the owner of the Lady Castle and lives a princess-like life with her servants. Hye-nas parents died from a plane accident and her grandfather brought her up. Hye-na is strong-headed, selfish and world revolves around her; it is because she could not experience the warmth of family when she grew up.
One day, she comes across Dong-chan. He makes Hye-na to do community service, kidnaps her, and now appears in front of her as the new household manager! Hye-na makes every effort to throw him out from the Castle, but this guy has tenacity in him!