Y/N is the youngest of six siblings and her face has never been seen by the public. Certain that she'll never ascend to the throne, she ignores responsibilities and lives her life to the fullest. She's almost never at the castle, instead exploring and learning about the commoner's way of living with her friend Seo Changbin, who's under the impression that she's just a weird village girl. That is until her parents get fed up of her antics and force her to make her debut as a proper princess.