Mary Poppins Returns (2018) One day, Mary Poppins (Emily Blunt) shows up at the door of Michael Banks, who is now grown up and a widower with three small children. He still lives at 17 Cherry Tree Lane, London, and is scrambling to make his next house payment before the Fidelity Fiduciary Bank boots them out. Mary Poppins steps in to take care of the kids, leading them on an unexpected adventure through magical lands, London streets, and even the Bank itself, as they endeavor to help their dad find a way to keep the house.