Mytyl and her brother Tyltyl are peasant children who are led on a quest for the Blue Bird of Happiness by the Queen of Light, who gives them a hat with a magic diamond that allows them to call forth the souls of all things, both living and inanimate. On their journey, they are accompanied by the human personifications of a dog, a cat, water, sugar, bread, light, fire, and the like. They visit the kingdoms of the past and future and the queendoms of night and luxury, at each place absorbing m...