Invasion of Astro Monster

Invasion of AstroMonster, known in Japan as Kaij Daisens ? , lit. Great Monster War , is a 1965 JapaneseAmerican science fiction kaiju TohoScope film directed by Ishir Honda and featuring special effects by Eiji Tsuburaya. It is the sixth film in the Godzilla film series. The film was coproduced between the Japanese company Toho, and Henry G. Sapersteins American company UPA, marking the first time a Godzilla film was coproduced with an American studio. The cast included American actor Nick Adams and Japanese actors Akira Takarada, Kumi Mizuno and Akira Kubo. The film is the first in the franchise to feature alien invaders, combining the series with outer space themes such as civilizations on other planets and interplanetary space travel.

In the 1960s, two astronauts, Fuji and Glenn, are sent to investigate the surface of the mysterious Planet X. There they encounter advanced and seemingly benevolent humanlike beings called the Xiliens and their leader The Controller. The aliens usher the astronauts into their underground base, and moments later the surface is attacked by a creature the Xiliens call Monster Zero, but which the astronauts recognize as King Ghidorah, a planetdestroying monster that had attacked Earth once before. The monster eventually leaves, but the Controller states that Ghidorah has been attacking repeatedly, forcing them to live underground in constant fear. He requests to borrow the Earth monsters Godzilla and Rodan to act as sentries against Ghidorahs attacks, in return for the cure for cancer the English dub says the formula can cure any disease. The astronauts return to Earth and deliver the message.Meanwhile, an inventor named Tetsuo has designed a personal alarm that emits an earsplitting electric siren. He sells it to a businesswoman named Namikawa, but she disappears before paying him. Tetsuo is romantically involved with Fujis sister, Haruno, but Fuji disapproves and berates him for getting scammed. Tetsuo sees Namikawa with Glenn and later follows her, but he is captured and imprisoned by Xilien spies. ........

Source: Wikipedia