An immediately startling film in the three-part animated anthology Lost Migrations, currently playing on Mubi, Sultana’s Dream, opens on a note of wonder. Based in Calcutta, an elderly woman, Sultana is whisked off in an afternoon dream to a fantastical society. This dream is a faithful adaptation of the eponymous short story by Rokeya Sakhawat Hossain, which first appeared in The Indian Ladies’ Magazine in 1905 and is hailed as one of the earliest pieces of feminist science fiction.