Godzilla vs. Gigan (1972)

Godzilla vs. Gigan 1972 / ゴジラ対ガイガン 1972 / Godzilla On Monster Island , Earth Destruction Directive: Godzilla vs. Gigan , Frankenstein's Hell Brood , Godzilla vs. Gigan , Chikyuu Kougeki Meirei: Gojira tai Gaigan , War of the Monsters

A man begins to suspect that something is wrong about his employers; meanwhile, Godzilla and Anguirus are alerted to something strange going on as Giant insectoid aliens from a dying planet in ‟Space Hunter Nebula-M‟ which they control from their secret headquarters inside the head of the Godzilla-replica building at a theme park plot to colonize the Earth using the monster King Ghidorah and new monster Gigan to destroy Godzilla and the people of earth .The only thing that can stop them with the combined efforts of Godzilla and Anguirus.