Barbie and the Diamond Castle

Barbie and the Diamond Castle
Theatrical Release Poster
Directed by	Gino Nichele
Produced by	Nancy Bennett Luke Carroll
Written by	Elana Lesser Cliff Ruby
Starring	Kelly Sheridan Cassidy Ladden Maryke Hendrikse Kathleen Barr Jeremy From Noel Johansen
Music by	Arnie Roth
Edited by	Tim Jones
Production company	Mainframe Entertainment Mattel Entertainment
Distributed by	Universal Studios Home Entertainment
Release date	September 9, 2008 (2008-09-09)
Running time	78 min.
Country	Canada United States
Language	English

Barbie and the Diamond Castle is a 2008 direct-to-video computer-animated film that was released on September 9, 2008. The film features the voice of Kelly Sheridan, who has voiced Barbie in the CGI Barbie film series. It is the third musical in the series.

Songs for the film were written by Amy Powers, Guy Roche, Russ DeSalvo, Gabriel Mann, Megan Cavallari and Jeannie Lurie along with executive producer Rob Hundnut. "Connected", the main song, was sung by Katharine McPhee.

The movie begins with Barbie and her best friend Teresa trying to play a song on their guitars when Barbie's sister, Stacie, storms in, angry at her friend Courtney and calls her a 'backstabber'. Barbie decides to tell Stacie the story of two friends named Liana and Alexa, who also get angry at each other.

The two best friends live in a hut beside a beautiful garden and plant flowers to make a living. They also share a love of music. One day, they find two heart-shaped stones which they make into necklaces to symbolize their friendship, not realizing that they are trinkets from the mythical Diamond Castle. The next day, an old woman gives them a mirror after they share the last of their food with her. The mirror is the hiding place of Melody, an apprentice muse from the Diamond Castle. Melody is on the run from Lydia, one of former three muses who lived in the Diamond Castle. Lydia became evil and turned the other two muses to stone, but not before they hid the Castle and left the key with Melody. If Lydia finds the Diamond Castle, all music will end, and with it eventually the world. Liana and Alexa coax a song out of Melody by singing, and Lydia's minion, a dragon known as Slyder, locates Melody by her voice.

With their home destroyed by Slyder, Alexa and Liana go with Melody to find the Diamond Castle and keep it safe from Lydia. They find two small puppies and at an inn meet twin musicians named Ian and Jeremy, who hear the girls sing and instantly fall for them, but the girls leave them behind at the inn. Lydia confronts them, and tries to cast a spell on them with her flute, but the girls' necklaces protect them. Lydia sets Slyder on them, but Ian and Jeremy arrive and they all escape.

The girls, now with the twins, comes across a dead end but soon meet a dislikable troll who captures the boys and vows to eat them and not let the group cross his bridge unless the girls answer his riddles. They do, which frees the boys and reveals a rainbow bridge that carries the girls off, leaving the boys behind. Liana and Alexa soon run out of food. They find a mansion and go to ask for shelter, but the servants there, bewitched by Lydia, tell them that they are the long-awaited mistresses of the house. Alexa wants to stay, but Liana wants to honor the promise they made to Melody, resulting to an argument which turns to a fight. Liana leaves the house with Melody and Alexa stays, ripping off her magic necklace that symbolizes her friendship with Liana in anger. Slyder arrives and takes Alexa to Lydia. After determining that Melody is not with Alexa, Lydia uses her flute's powers against Alexa to find Liana, and because Alexa is not wearing her magical necklace, she falls under Lydia's spell. Alexa tells Lydia that Liana and Melody are heading to the seven stones, where the Diamond Castle is hidden.