Set on Earth in the early 21st century, the wisecracking action hero Duke Nukem returns from space aboard his cruiser hoping to enjoy a well-earned vacation in Los Angeles. His plans are shattered when hostile forces shoot his ship out of the sky. Sending out a distress signal, Duke discovers that an alien army has descended on Los Angeles, terrorizing the city and mutating the LAPD into monstrous foes. With his getaway ruined and the streets overrun, Duke vows to do whatever it takes to repel the invaders, uncovering along the way that the aliens have been abducting the city's women as part of a far larger scheme. This anniversary edition expands the saga with a globe-spanning fifth chapter, as the alien menace launches a worldwide assault and Duke carries his one-man crusade across iconic cities and landmarks around the planet.