An evil dictator threatens to take over the kingdom and Princess Rosalinda gets put into the Princess Protection Program. She is whisked away to rural Wisconsin where she must learn the ins and outs of behaving like a normal American teenager. She is taken under the wing by Mason, an agent from the Program. Carter is Mason's daughter, who works after school at a nearby bait shop. Rosalinda, now known as Rosie, helps Carter overcome her insecurities...

Carter Mason is going to Costa Luna for a week to visit her best friend, the Queen! Rosalinda is preparing for Independence Day festivities, and Carter can't wait to join the fun. Rosalinda has another special guest at the palace, though-a spoiled, demanding, nine year old princess! Carter tries to teach the young girl how to blend in and be a true princess, which is no easy feat.