How I Live Now is a 2013 romantic speculative drama film based on the 2004 novel of the same name by Meg Rosoff. It was directed by Kevin Macdonald, written by Tony Grisoni, Jeremy Brock and Penelope Skinner while starring Saoirse Ronan, George MacKay, Tom Holland, Harley Bird, Anna Chancellor and Corey Johnson. The film centres around American teenager, Daisy and her British cousins, Eddie (MacKay), Isaac (Holland), and Piper (Bird), as they try to reunite during an apocalyptic nuclear war.