Mariposa is a brave, smart, calm, daring, kind hearted, humble and the shyest butterfly fairy with a taste for adventure. Mariposa never felt accepted and always thought she was different. Also she loves to read the books more than everything.In Barbie Mariposa & The Fairy Princess she goes to Shimmervale to meet Princess Catania the crystal fairy princess.But an evil fairy named Gwyllion tries to steal all the crystals Mariposa & Catania has to work together to save the day its about friendship and trust.