In this magical adventure, Barbie stars as Mariposa, the royal Ambassador of Flutterfield, who is sent to bring peace between her fairy land and their rivals, the Crystal Fairies of Shimmervale. While Mariposa doesn't make a great first impression on their King, she becomes fast friends with his shy daughter, Princess Catania. However, a misunderstanding causes Mariposa to be banished from the fairy land. When Shimmervale is in danger, Mariposa rushes back and helps Princess Catania save her fairy land and together, the two girls prove that the best way to make a friend, is to be a friend