High Quality Content by WIKIPEDIA articles! Alien Nation: The Udara Legacy (original airdate: July 29, 1997) was the fifth and final television movie produced to continue the story of the prematurely canceled television series Alien Nation. The plot introduces the idea that among the Tenctonese slaves, there was a resistance movement called the Udara who were implanted with hypnotic suggestions to act as sleeper agents. Now, here on Earth, someone has found a way to activate these sleeper agents, and send them out as assassins.