In the near future, dark forces once driven back into the shadows by all soldiers of democracy and peace have regrouped under an alien intelligence known as Leader X. Numerous attacks upon bastions of life upon the Earth and her numerous space colonies by the alien terrorist empire of the planets Spectra and Selectol in the faraway Andromeda Galaxy known as Galactor have reached a breaking point. Needing to find a solution fast, the Intergalactic Science Organization of the Galactic Federation assembles fives youths to unite as a Science Ninja Team or G-Force named Gatchaman to help the United Nations take the fight to Galactor. Using their new bird-themed superpowers and arsenal; Ken, Joe, Jun, Jinpei and Ryu become the Red Eagle G-1, Blue Condor G-2, Pink Swan G-3, Yellow Swallow G-4 and Green Owl G-5 battling against the Startroops and Iron Beast Mechas which threaten the ISO's Mantle Project designed to help terraform distant colonies and supply sustainable life resources. All the while, they have to learn to work as a team in order to track down Galactor's secret base and destroy its leadership before more people are killed.
