Magnolia Pictures has released the first trailer for How I Live Now, an apocalyptic thriller from director Kevin Macdonald (The Last King of Scotland), starring Saoirse Ronan (Hanna) as an American teenager whose visit to the U.K. is disrupted by the start of World War III.

How I Live Now is based on English writer Meg Rosoff’s 2004 young-adult novel of the same name and co-stars George MacKay (Defiance), Tom Holland (The Impossible) and Anna Chancellor (The Hitchhiker’s Guide to the Universe). Magnolia is eyeballing a fall release for the film through Magnet Releasing.

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