The Ending Of World War Z Explained

After the success of his 2003 how-to manual The Zombie Survival Guide, Max Brooks decided to take his love of the walking dead up a notch. Using his own work's version of the zombie "rules" (themselves inspired by the Romero canon, which established elements like zombies' slow gait and vulnerability to headshots) and drawing inspiration from Studs Terkel's oral history of World War II, he crafted a harrowing novel set in the era after the outbreak of a virus that reanimates corpses and nearly wipes out the human race. In it, a member of the UN Postwar Commission travels to locations around the world, conducting interviews that take the reader from the first hot spots to the collapse of society to the darkest moments, when humanity finds a way to fight back.

Despite its after-action report format, the book is full of scenes of zombie terror, gripping political commentary, and creative ideas about the ways in which humankind would need to adapt in order to overcome a threat to its very existence. Audiences responded with great enthusiasm, and World War Z would top the New York Times bestseller list, eventually selling more than a million copies.

With that amount of success, World War Z was bound to be a hot commodity when it came to film rights... but who would take on the challenge of adapting this unconventionally structured effort?

The first signs of trouble appeared in 2009, when Marc Forster revealed that the script would be undergoing a rewrite from Matthew Michael Carnahan, whose previous works included The Kingdom and State of Play. Despite rosy statements from Max Brooks, who wasn't given input throughout the screenwriting process, word around the lot was that the rewrite came as the result of a clash between Forster and J. Michael Straczynski, with the former preferring a more action-oriented focus than what was present in the latter's script.

Carnahan's script changed things dramatically. Instead of taking place, as the book does, in the aftermath of the Zombie War, this new version put us, and Brad Pitt's Gerry Lane, squarely in the middle of the zombie apocalypse right from its earliest days. The focus was placed more on action and the Lane family's struggle to survive, rather than on the larger political and social implications of an all-out struggle against human extinction. Lane would still visit several locations around the Earth, from South Korea to Israel to Newark, N.J., but instead of interviewing those who'd been through the worst of the situation, he'd be experiencing it firsthand.

With this new script in the works, principal photography kicked off in July of 2011, but the change in focus would hardly be the last hurdle the production would face.

So, why all this hubbub about the story's ending? Well, the book's ending is a bit nebulous. In it, humanity, after abandoning large portions of several land masses to the walking dead and retreating to various "Safe Zones," discovers that it must re-envision itself. Industry is retooled to facilitate the war effort, and military weaponry and tactics are completely overhauled to deal specifically with the kind of threat posed by a horde of shuffling, cannibalistic corpses — goodbye shock and awe; hello headshots. The book's climax sees various governments, including that of the United States, waging an all-out offensive to retake territory that had previously been overrun, reclaiming the world for the living.

As is so often true in life, though, things are a little messier than that. The undead threat never completely goes away. Zombie-ism is never "cured." The geopolitical ramifications of so many millions dying, of governments changing and reshuffling, are still being sorted out. The Earth's environment has been devastated due to nuclear conflict in the early days of societal breakdown and rampant and unchecked fires. Life for those who've survived humanity's near extinction is harder than it used to be, with the only note of hope being that we, as a species, stared down our own annihilation and beat it back.

It's... not exactly Hollywood blockbuster material.

The ending was massive, and set the story up to launch a franchise, but just about everyone who reviewed rough cuts, from studio executives on down, felt the shift from the everyman Pitt played through the first two-thirds of the movie to what amounted to an '80s-style action hero in the last third was abrupt and emotionally unsatisfying. What's more, the fact that his family is fractured and still separated by the time the credits roll left viewers cold.

Said reservations were so intense, in fact, that Damon Lindelof, of Lost fame, was brought in to ideate around changes to the third act (Lindelof would later bow out in favor of Drew Goddard). He offered Paramount two options: One made up of minor tweaks to up the emotional stakes, and one that changed just about everything after Lane leaves Israel. Surprisingly, the studio opted for the more drastic, and costlier, option. This, coupled with seven weeks of reshoots during which Forster and Pitt were no longer on speaking terms, resulted in the budget of the film ballooning to a reported minimum of $190 million, harshing Paramount on the movie and resulting in a seven-month delay in its release.

Oh, and that troubled Budapest portion of the shoot? The majority of the 12 minutes of footage it yielded was dropped entirely. Oops.

Wouldn't you know it, a W.H.O. facility is just the place for Lane to test his theory that, by infecting one's self with a deadly — but curable — pathogen, it's possible to create a sort of "camouflage" that will cause zombies to ignore a potential victim. The only problem is that the lab containing the types of pathogens he needs is in the zombie-infested part of the building. In order to figure this all out and possibly save humanity, Lane and his companions have to embark on a sort of stealth mission, sneaking their way to a particular vault without alerting the dormant undead wandering the halls.

Here, we see the results of Lindelof and Goddard's effort to scale the action down to a more personal level. Rather than an epic battle, we're treated to a tense game of cat and mouse as Lane and company tiptoe their way toward the relevant vault. While they're eventually separated, Lane does get where he needs to go. Once he's there, however, he's trapped by a zombie blocking the exit... which is the perfect impetus for him to conduct the kind of experiment that only works in the movies. Injecting himself with an unknown pathogen, he then opens the door, only to find himself ignored by every zombie he encounters on his walk back to freedom.

To paraphrase the Grateful Dead, what a long, strange trip it was for World War Z, from bleak book to faithful adaptation to all-out war in the streets of Russia to a family brought together and a tide turned. With all this rigamarole, and with so many changes from the source material, would audiences respond?

Yes, they would: World War Z exploded to a box office take of $202.4 million domestically and $540 million worldwide, which were pretty great numbers for a film with such a troubled production history. It also clocked Pitt's biggest opening weekend, devouring $66.4 million in its first three days.

Unfortunately, this success didn't cure the contagion that plagued the property, as the sequel was scrapped after several stop-and-go efforts that included the signing of director David Fincher. Also apparently factoring in was China's ban on zombie movies, which crippled the potential for international revenue.

Still, despite its troubles, World War Z's success showed that audiences were hungry for more walking dead. Meanwhile, everyone involved emerged unscathed, with Pitt going on to arguably peak with 2019's Once Upon a Time... in Hollywood, Straczynski penning cult hit TV series Sense8, Forster directing Christopher Robin for Disney, and Damon Lindelof crafting one of 2019's top TV shows, Watchmen. Not bad for the crew behind a movie that, at certain points as it staggered to its ending, seemed like it would be dead on arrival.