P. L Travers

Luti, whom the formidable Miss Andrew has taken from the South Seas to London in order to civilize, feels the need to go home again, so Mary Poppins helps him get back to his island by way of the Man-in-the-Moon.

A wind brings some English children a new nanny who slides up the bannister, introduces the two oldest to her friends, and takes them on many adventures.

Decades after her original visit, the magical nanny returns to help Michael's three children, along with grown-up Jane and Michael Banks, through a difficult period in their lives.