The fantasy superhero film, starring Peyton Elizabeth Lee, drops Sept. 25 on Disney+. 'Secret Society of Second-Born Royals' follows Sam (Lee), a rebellious teenage royal who unknowingly develops superpowers from a genetic trait attributed only to second-borns of royal lineage. Second-in-line to the throne of the kingdom of Illyria, Sam constantly questions what it means to be royal and wants to create her own legacy. Unlike Sam’s picture-perfect older sister Eleanor (Ashley Liao) who will become the next queen, Sam would rather rock out with her bandmate and best friend Mike (Noah Lomax) at an illegal protest or ditch a royal engagement for a wild night out. Fed up with her daughter’s misbehavior, Queen Catherine (Elodie Yung) sends Sam to a summer boarding school where she and four other second-born royals -- Tuma (Niles Fitch), Roxana (Olivia Deeble), January (Isabella Blake Thomas) and Matteo (Faly Rakotohavana) -- discover they have unique superhuman abilities and are invited to join a secret society with a longstanding tradition of covertly keeping the peace. With a new sense of purpose and a little help from their Secret Society instructor James (Skylar Astin), Sam and her fellow royal recruits must learn to harness their newfound powers and work together as a team before they can save the world.