It follows Sam's adventures at a top-secret training program for a new class of second-born royals tasked with saving the world. Sam is a teenage royal rebel, second in line to the throne of the kingdom of Illyria. Just as her disinterest in the royal way of life is at an all-time high, she discovers she has super-human abilities and is invited to join a secret society of similar extraordinary second-born royals charged with keeping the world safe.