Mia i ja Sezon 3 Odcinek 20: Return to Rainbow Island

The heroes must find a Heart Crystal on Rainbow Island. There, Onchao gets jealous on his little sister, because he wanted to play with his friend Flair alone. Onchao trots alone over the island and finds the Heart Crystal in the Rainbow Dome. He takes it out to have a present for Flair to apologize for his bad behavior, causing all the rainbows to go out. In the end, Yuko gives the diamond she got from Mo as a substitute for the Heart Crystal to start the rainbows again.