You are an independent young woman who runs a homely, old-fashioned bakery together with your grandmother. Your peaceful life is shattered when a few suspicious customers show up at the bakery: three handsome men dressed in black. They forcibly take you away in a limousine to the office building of the highly esteemed “S Group,” a company so rich they own practically every inch of the city. The CEO of S Group reveals to you a complex family history: you are his illegitimate granddaughter and he has decided to make you the next heir of the company. If you agree, the economic security and safety of your grandmother are secured. You are reluctant at first, but you can’t turn down the promise of a better life for your grandmother. However, being an heiress isn’t all fun and games; you must undergo special training to be shaped into a proper lady… with the three handsome men as your guides?! Given the order to change yourself into someone you’re not… are you up to the task? How will you adjust to a new lifestyle with your new butlers?