In Depression-era London, a now-grown Jane and Michael Banks, along with Michael's three children, are visited by the enigmatic Mary Poppins following a personal loss. Through her unique magical skills, and with the aid of her friend Jack, she helps the family rediscover the joy and wonder missing in their lives.
A few decades after her original visit, Mary Poppins, the magical nanny, returns to help the Banks siblings and Michael's children through a difficult time in their lives.