Look, if you want to keep calling this a zombie movie, go ahead. Do it. We can’t stop you. We can only point out that you’re wrong. So if you like being wrong, that’s cool and all. But this is not a movie about zombies. It’s a movie about people infected with a virus who then turn into murderous fiends. See the difference? Danny Boyle’s horror movie follows Jim (Cillian Murphy), who wakes up in a hospital bed the titular four weeks later after the virus begins to spread. He walks around an empty London, encounters some other survivors, comes upon a group of military men and then discovers that man can be just as awful as those infected with the Rage.