The story, set nearly a century before the events of Potter and his gang, follows writer Newt Scamander (Redmayne), a writer and wizard who arrives in New York with a case of something not quite human. These creatures escape, getting Scamander in trouble with the US branch of wizardry, and threatening to wreak havoc for both the magical and the muggles.
I'm a big fan of the work Yeats has done with J.K. Rowling's universe, and this trailer is pretty impressive, with an excellent cast both British and American. The film is set for release in November 2016, so no doubt there will be more information over the coming months.