"World War Z" trailer: Brad Pitt's turbulent quest to save humanity The new trailer for Brad Pitt's globe-hopping pandemic thriller "World War Z" plays up the tension of the apocalyptic tale and concludes with scenes from one of the movie's biggest action set pieces, a zombie outbreak aboard a plane. Directed by Marc Forster, "World War Z" centers on Pitt's ex-U.N. investigator Gerry Lane, who races around the world trying to hunt down the origin of the disease that appears likely to wipe out mankind, hoping to find some way to bring humanity back from the brink and save his wife and daughters. Time is of the essence - it's pointed out in the trailer that "Life as we know it will come to an end in 90 days." Some of the images showcased in the new clip appear familiar - the chaos and confusion of a street scene, Lane and his family gathering courage to make a run for a helicopter offering escape, the swarm-like behavior of the zombies. But the plane sequence is especially striking. In an interview with Hero Complex earlier this year, Forster explained that the set piece was shot over eight days on a soundstage at England's Shepperton Studios, with two additional days of second-unit filming. Five actors were cast as passengers who became infected; 22 stunt performers bolstered the ranks of the newly turned zombies. "You're mixing real zombies with some of the CG zombies," Forster said. You want the real zombies in there, especially for [visual effects supervisor] Scott [Farrar] and his team to match the CG zombies. Some of them blend so well between humans and CG that you really cannot tell the difference anymore. Due in theaters June 21, "World War Z" is adapted from Max Brooks" popular novel; Matthew Michael Carnahan penned the script. What do you think of the clip? Are you interested in seeing Forster's take on Brooks" book? "World War Z": Brad Pitt battles zombies, not snakes, on a plane "World War Z": Brad Pitt's zombie epic gets Super Bowl teaser "World War Z" trailer: Brad Pitt battles zombies at the end of the world "Man of Steel": Zack Snyder says Superman "must be taken seriously" "Walking Dead" finale: Gale Anne Hurd on zombie show's future "Walking Dead": Glen Mazzara on war, revenge, hope Glen Mazzara: Comic fans won't guess what's coming "Walking Dead": Michael Rooker on tough love, Merle's code "Walking Dead" star Danai Gurira: Michonne, Rick and PTSD