A blast of wind, a house-rattling bang, and Mary Poppins arrives at Number Seventeen Cherry-Tree Lane. Quicker then she can close her umbrella, she takes charge of the Banks children - Jane, Michael, and the twins - and changes their lives forever.

Unlike other nannies, Mary Poppins makes the most ordinary events extraordinary. She slides up banisters, pulls all manner of wonders out of her empty carpetbag, and banishes fear or sadness with a no-nonsense "Spit-spot." Who else can lead the children on one magical adventure after another and still gently tuck them in at the end of the day? No one other than the beloved nanny Mary Poppins.