Godzilla used to be the biggest and baddest there is, but with this movie, Toho introduced King Ghidorah, who was based on the legend of Orochi. By adding this villain to the Godzilla universe, the big green guy completed his journey from heel to babyface.
While I usually don’t enjoy the human parts of these movies, this one has a pretty good story. A princess pursued by assassins has been possessed by an alien who can predict the future, such as Rodan’s return and Godzilla attacking.
That alien princess has come to Earth to warn us of Ghidorah, the creature that wiped out her home planet of Venus. Only the combined powers of Godzilla, Rodan and Mothra — in larvae form as having two flying kaiju would have been too complicated — can stop this three-headed demonic force.
This film follows Mothra vs. Godzilla and continues the trend of bringing the Toho monsters together to create a shared universe. Every monster in this movie would return for 1965’s Invasion of Astro-Monster
As always. Germany had the best title for this movie: Frankenstein’s Monsters in Battle against Ghidorah.