Yoshibumi Tajima

Miners uncover the nest of a giant pterodactyl.

Aliens have released all the giant monsters from their imprisonment on Monster Island and are using them to destroy all major cities on the planet. It's up to the daring crew of the spaceship SY-3 to infiltrate the aliens' headquarters before the monsters and King Ghidrah annihilate the planet.

A scientist and his aide must try to stop the rampage of an escaped lab creature called Gargantua, who is thought to be killing countryside residents.