Mary Poppins Returns is an upcoming American musical fantasy film directed by Rob Marshall and written by David Magee , from a story by Magee, Marshall, and John DeLuca. Based on the book series by P. L. Travers and a sequel film to 1964's Mary Poppins , the film stars Emily Blunt as the titular character , with Lin-Manuel Miranda , Ben Whishaw , Emily Mortimer , Pixie Davies , Joel Dawson, Nathanael Saleh, Julie Walters , Colin Firth , Meryl Streep , and Angela Lansbury in supporting roles. Dick Van Dyke is the only actor from the original to return. Set in 1930s London, 25 years after the events of the original film, it sees Poppins, the former nanny of Jane and Michael Banks, re-visiting them after a family tragedy.