It all starts in little Zerlina’s bedroom, when usually it should be bedtime for children. From the height of an air balloon shaped lamp, a toy hare asks Zerlina to take part in a mission: find all the colours a butterfly has lost. So the two friends, and the butterfly with them, end up flying through the night air. To complete their mission Zerlina and Dendè will bravely face more and more mysterious and far away lands, with the help from everything surrounding them: sun, poppies, scented leaves, silver fish... During the journey the little girl will grow up and discover the variety of the world, while the butterfly will win back it’s identity through the harmony of its colourful wings. Zerlina’s gradual forming of character makes every chance to stand comparison with her surroundings special and unique; only at the end of the journey the harmony of different elements will come together in the brightness of the morning. With the rhythm of colours, the story ends as it had begun, in Zerlina’s bedroom.