Barbie: Mermaidia (2006)
Mermaldia is based on Elina who now has wings that make her daily journey more confortable. One day she gets informed that Laverna had kidnapped merman prince so she will start investigating this matter.
A group of fungus will start searching for an immunity berry so whoever gets the berry will be the most powerful person in the whole world.
Elina with her friends will try to stop this from happening because it could be a disaster that could not be ordered in the future by Barbie or Elina.