Furthering the adventures of Neo (Reeves), a potential savior of humanity, THE MATRIX RELOADED takes us further into the mythology of this future world. We are introduced to the subterranean city of Zion—the last holdout of human civilization against the machines and the rebel base—just in time to discover that an army of evil robot Sentinels are heading to destroy it. Meanwhile, Agent Smith (Weaving), the main antagonist from the first film, has become a rogue program and is even more dangerous than before.