Titan A.E. is a 2000 animated post-apocalyptic science fiction adventure film directed by both Don Bluth and Gary Goldman. The title refers to the spacecraft central to the plot, with A.E. meaning "After Earth". The film stars the voices of Matt Damon, Bill Pullman, John Leguizamo, Nathan Lane, Janeane Garofalo, and Drew Barrymore. In 3028 A.D., humanity has mastered deep space travel and interacted with several alien species. A human invention called "Project Titan" alarms the Drej, a pure energy-based alien species who attack Earth after breaching the Global Defense System. As the Drej start to attack Earth, Professor Sam Tucker, the lead researcher for "Project Titan", sends his son Cale on one of the evacuation ships with his alien friend Tek while Tucker and other members of his team fly the Titan spacecraft into hyperspace. With Earth destroyed by the energy beam fired by the Drej mothership with the explosion also breaking the Moon, the surviving humans become nomads, generally ridiculed by other alien species.