Liana and Alexa (Barbie and Teresa) are best friends who share everything, including their love of singing. One day while walking through the forest home from the village, the girls meet an old beggar who gives them a magical mirror. As they clean the mirror and sing, a musical apprentice muse named Melody appears in the mirror’s surface, and tells the girls about the secret of the Diamond Castle.
All the ponies can’t wait for the Winter Wishes festival where the Wishing Star grants each pony one special wish. But when the Wishing Star disappears they go on a journey to find it. But will they make it back in time for the festival? Join Pinkie Pie and all her pony friends on their journey as they discover that friendship can make wishes come true.