The Mysterians

Munchkin-like aliens invade Earth full force with their flying saucers and laser weapons, rendering cities helpless. All eyes turn to the most powerful nations on Earth as they unite to concoct a plan to vanquish the aliens and return Earth to the hands of humans, thus, resulting in the most fierce and ultimate battle royale in outer space the galaxy as ever seen.

Aliens arrive on Earth and ask permission to be given a certain tract of land for their people to live on. But when they are discovered to be invaders, responsible for the giant robot that is destroying cities, the armed forces attempt to stop them with every weapon available.

Earth is attacked by alien spacecraft from Venus. But a Japanese scientist has constructed a space craft, the Gohten, with which he may save humanity.