Barbie stars as Merliah, a surfer who learns a shocking secret: she's a mermaid! She and her dolphin friend set out for an undersea adventure to rescue her mother, the queen of Oceana.

On Christmas Eve, Kelly is reluctant to go to a Christmas Eve ball, so Barbie tells her the story of Eden Starling, a glamorous singing diva in the Victorian England and the owner of a theatre house. However, Eden is self-centered and loves only herself. She is frequently accompanied by her snooty cat, Chuzzlewit. She does not believe in Christmas and orders all her employees to work on Christmas.

Liana and Alexa (Barbie and Teresa) are best friends who share everything, including their love of singing. Upon meeting a girl inside a mirror, the duo embark on a journey that will put their friendship to the ultimate test.

Shipwrecked as a child, Rosella (Barbie) grows up on the island under the watchful eyes of her loving animal friends. The arrival of Prince Antonio leads Rosella and her furry pals to explore civilization and ultimately save the kingdom by uncovering a secret plot.

In her first animated musical featuring seven original songs, Barbie comes to life in this modern re-telling of a classic tale of mistaken identity and the power of friendship. Based on the story by Mark Twain.