Two years have passed since the Jetman triumphed over the evil Vyram faction and saved the Earth. Humanity has flourished again, but peace is fragile, however, one night that peace was destroyed. A remnant of Vyram, hidden in the darkest corners of the universe, has returned to Earth. Renegades and resentful, this group has developed powerful mechanical giants that are wreaking havoc on humanity. They have issued a chilling ultimatum: if the sun goes down, the giants will devastate the world and there will be no hope.​ Faced with this desperate situation, the Choujin Sentai Jetman are forced to meet again to face the greatest threat they have ever known.