 "Mary Poppins" is considered Walt Disney's crowning live-action achievement, and is the only one of his films which earned a Best Picture nomination during his lifetime.A sequel, "Mary Poppins Returns", was released on December 19, 2018.In Edwardian London, 1910, George Banks returns home at Cherry Tree Lane to learn from his wife, Winifred, that Katie Nanna has left their service after their children, Jane and Michael, have run away, "For the fourth time this month," ("Life I Lead").