Invasion of Astro-Monster (1965)

In the depths of the uncharted cosmos, astronauts Glen and Fuji journey to Planet X, an enigmatic moon hidden in the shadowy embrace of Jupiter. This newly discovered celestial body, a silent sentinel in the great expanse, has been transmitting cryptic radio waves to Earth, sparking intrigue and unease. Upon their arrival, Glen and Fuji are ushered into the planet's labyrinthine caverns, the refuge for the planet's denizens who are under the relentless assault of Ghidorah, a formidable beast, exiled there after its defeat by Godzilla, Rodan, and Mothra. The desperate inhabitants of Planet X plead with the astronauts to lend them Godzilla and Rodan, leaving Mothra behind, to fend off Ghidorah. In return, they promise a miracle drug, a panacea potent enough to eradicate all forms of cancer. Meanwhile, on Earth, Fuji's sister Haruno is entwined in a budding romance with Tetsuo Torii, an ingenious inventor who has just crafted a high-frequency transmitter designed to deter muggers. The aliens, adhering to their pact, transport Godzilla and Rodan back to their celestial home where they appear to vanquish Ghidorah. The astronauts return to Earth with a tape, presumed to contain the promised cancer-curing formula. However, the tape unveils a sinister ultimatum instead: surrender Earth or face annihilation by the combined might of Godzilla, Rodan, and Ghidorah. As the prospect of interstellar war looms and the stakes escalate, one question persists - what part will Tetsuo's new invention play in this impending cosmic drama? Invasion of the Astro-Monster weaves an intricate tale of alien manipulation, monstrous battles, and scientific innovation. It's a thrilling journey into the unknown, where alliances are tested, deceptions are unveiled, and Earth's destiny hangs in the balance.

Invasion of Astro-Monster is an action movie featuring Nick Adams.

Invasion of Astro-Monster is currently streaming for free (ad-supported) on Crackle, Freevee, Plex, Plex Player, Pluto TV, Shout! Factory TV and Tubi TV and it's also available on Criterion Channel, Max, Max Amazon Channel, TCM and fuboTV.

It is also possible to buy Invasion of Astro-Monster on Apple TV.