The movie will follow a now-grown Michael Banks, who has children of his own. His sister Jane arrives on the scene to help out once he finds himself in a bind (something to do with a bank, perhaps?), with Mary Poppins reappearing not long after that.The decades-late sequel was first announced in September of last year, with Blunt's name emerging as a contender even then. In addition to this planned movie sequel, Marshall is also helping Disney orchestrate a new Broadway musical, with inspiration once again coming from the classic book series. There's no word on whether Blunt would be involved with that enterprise, but it's rather unlikely. Time will tell if the sequel bears the same name as the second book in the series - 'Mary Poppins Come Back'. https://www.youtube.com/watch?v=vLkp_Dx6VdI Emily Blunt can next be seen in The Huntsman: Winter's War, released on 22 April. The Untitled Mary Poppins Sequel does not currently have a release date.