Watch Gate Keepers2000|1 season|Animation,Action & Adventure,Comedy,Sci-Fi & FantasyPlay TrailerAdd to WatchlistStoryTokyo, 1969. Earth is under attack from the "Invaders." The public is unaware of this but to the secret organization, A.E.G.I.S., the threat is known, and it is up them and their special powered "Gate Keepers" to stop this invasion.