Cita:Twenty years after NBC's hit sci-fi miniseries "V" invaded the small screen, the network is bringing the aliens back with "V: The Second Generation," a three-hour telefilm from the original creator Kenneth Johnson. Johnson, who penned, directed and produced the mini, is set to write, direct and executive produce the sequel, which has been given a script commitment. The 1983 "V" (short for Visitors), which spawned a short-lived weekly series on NBC, was a sci-fi allegory of the Nazi takeover of Germany in the 1930s. It centered on the Visitors, aliens from a distant planet who'd come to Earth with the promise to solve the world's problems through their high technology, but after gaining control of the planet through subterfuge and media manipulation, began to methodically kill their enemies. A small group of humans, who discovered the Visitors' true plan -- to conquer the Earth and eat its population -- form a resistance and lead the fight against the invaders.