Watch Invasion of Astro-Monster
"Ruler of the universe Planet X"
- 1 hr 36 min
When a mysterious new planet is discovered in the solar system, astronauts Fuji and Glenn are sent out to investigate. They discover a race of advanced aliens who are under attack by the monster King Ghidorah. The aliens make Earth an offer. If they send Godzilla and Rodan to Planet X to fight Ghidorah, they will give Earth information to cure all disease. But Fuji and Glenn are suspicious, and try to find out if the aliens of Planet X have noble intentions, or if their motives are more sinister.