Mary Poppins is a magical nanny called to work for the unhappy Banks family in London. She takes the spoiled children on magical adventures to teach them valuable life lessons about appreciating family and not always getting what they want. Through her kindness and musical talents, Mary Poppins helps mend the relationship between the father and his children, bringing love and happiness back to the family by the end of her time with them. The main characters include the magical nanny Mary Poppins, the stern banker father Mr. Banks, and the musically inclined Uncle Albert.