I'm looking for an episode of Barbie series.

You can reach Barbie's wonderland by crossing the rainbow. ...

Alina, a wingless fairy, has always longed for a pair of wings. Beyond the magic meadow is her hometown. One day, the flowers in her hometown garden withered. What's more, her winged fairy girl friends couldn't fly. So, she summoned up her courage and set out to find the help of the patron saint fairy who could solve these problems. However, there are many difficulties and hardships in the journey. Can Alina withstand these tests? Will she understand true friendship? Barbie's Rainbow Fairy 2- Mermaid Princess In the mermaid princess in Barbie Wonderland, Elena (Barbie) had to give up her beautiful wings and become a mermaid in order to save her friend, the mermaid prince. The evil witch Luvina kidnapped the mermaid prince Luna and wanted to use his power to become the ruler of the dreamland. Only Alina can stop all this, but she alone is not enough. She must use Li Luo's help. Li Luo is a mermaid who doesn't want to trust others. She doesn't want to help alina. She's cute. Lena sincerely persuaded Li Luo, and what awaits her is a more arduous challenge. In order to save Lu Na, Elena must give up her most precious wings. Can Elena do it? If she fails, wonderland will always be in Luvina's hands. ...