When Desi Bascomb gets discovered by the elite Facade Agency – royalty surrogates extraordinaire – her life goes from glamour-starved to spectacular in a blink. As her new agent, Meredith, explains, Desi has a rare magical ability: when she applies the ancient Egyptian formula 'Royal Rouge', she can transform temporarily into the exact lookalike of any princess who needs her subbing services. Dream come true, right? Well, Desi soon discovers that subbing involves a lot more than wearing a tiara and waving at cameras. Like, what do you do when a bullying older sister puts you on a heinous crash diet? Or when the tribal villagers gather to watch you perform a ceremonial dance you don’t know? Or when a princess’s conflicted sweetheart shows up to break things off – and you know she would want you to change his mind?