Who else but Mary Poppins can lead the Banks children - Jane, Michael, and the twins - on such extraordinary adventures? Together they all meet the Goosegirl and the Swineherd, argue with talking cats on a distant planet, make the acquaintance of the folks who live under dandelions, and celebrate a birthday by dancing with their own shadows! This fourth and final book in the beloved series features six whimsical tales that occurred during the magical nanny's three previous visits.