It all starts when Mary Poppins is blown by the east wind onto the doorstep of the Banks house. She becomes a most unusual nanny to Jane, Michael, and the twins. Who else but Mary Poppins can slide up banisters, pull an entire armchair out of an empty carpetbag, and make a dose of medicine taste like delicious lime-juice cordial? A day with Mary Poppins is a day of magic and make-believe come to life!