Barbie and her friends are invited by Princess Amelia to visit her kingdom for a once-in-a-lifetime trip. When Barbie discovers she and Amelia are identical, the two decide to trade places, giving Barbie a chance to experience royal life while Amelia steps out of the spotlight. But as Amelia’s coronation approaches, Prince Alfonzo kidnaps her, and Barbie must find the courage to help save her new friend.