A pair of peasant children, Mytyl ( Patsy Kensit ) and her brother Tyltyl ( Todd Lookinland ), are led on a magical quest for the fabulous Blue Bird of Happiness (Nedezhda Pavlova) by the Fairy Berylune. On their journey, they are accompanied by the humanized presence of a Dog, a Cat, Light, Fire (Yevgeni Shcherbakov), Bread (Richard Pearson), and other entities.