The movie begins with Barbie and Teresa writing a song together on their guitars when Barbie's sister Stacie (the Stacie doll was originally named Tutti but she was renamed Stacie in 1992) storms in angry with her friend Courtney. (This is the first appearance of Barbie's sister
Stacie in any of the Barbie Films. Until now, the only other sibling of Barbie to have been featured in the Barbie films has been Kelly (Barbie and Stacie's younger sister), most notably in the first three films. Barbie, Stacie, and Kelley's other three siblings Skipper (second oldest), Todd (Stacie's twin brother), and Krissy (youngest) have not yet appeared in any of the Barbie films.) Barbie decides to tell Stacie the story of two friends named Liana and Alexa.
Liana and Alexa (Barbie and Teresa) are best friends who share everything, including their love of singing. Liana and Alexa sell flowers for a living. One day, Liana finds 2 heart-shaped diamonds in the river. Suddenly, there is a storm, and the two girls hurry inside their house. Liana makes the two diamonds into two necklaces, one for each girl. The next day, they find that their garden is destroyed by the storm. They sell the remaining flowers to get 3 coins, but that will not last until the next growing season. While walking through the forest home from the village, the girls meet an old beggar. Liana feels sorry for the old woman so she gives her her lunch, bread and jam, even though she and Alexa don't have much either. In return, the old woman gives her a magical mirror. As they clean the mirror and sing, a musical apprentice muse named Melody appears in the mirror's surface. Melody tells the girls about the secret of the Diamond Castle, which is the home of all music, and where three musical muses once resided until one evil muse, Lydia, tried to take the castle for herself. She failed, but turned the other muses to stone.
In an act of safekeeping the other two muses entrusted the key of the Diamond Castle to Melody. And to keep the key safe from Lydia, Melody hid herself in the mirror, but now she can't get out. She needs Liana's and Alexa's help to free her from the mirror and to save the Diamond Castle. Suddenly, Slider, Lydia's dragon hears Melody's voice, prompting Lydia to go after Melody for the keys. Liana and Alexa must hurry to get to the Diamond Castle first to get the other muses instruments to free the two other muses and to banish Lydia. Along their way, Liana and Alexa make new friends including two identical twin brothers Jeremy and Ian, who also have a love of music.
>>Yeah!! Lahat ng barbie movies, napanuod ko na.. Hahaha.. Mayroon pang isang darating na movie ngayong taon, around December siguro.. Barbie in a Christmas Carol and i'm sure na magpapabili na naman ang kapatid ko ng tape pag nalaman niya.. Haha..