Bae Joohyun, the daughter of the queen's late upper hand, was summoned to work at the castle. Meeting the royal family and working for them is exciting and at the same time, scary for her because of the princesses she never met even once her whole life. How will Bae Joohyun adjust to a totally different life as a royal assistant? Will she be able to cope up with everything in no time? And working for two gorgeous princesses who are wonderful in their own ways, will she be able to help