In the real world
- Frankenstein vs. Baragon is released on August 8 in Japan.
- Gamera is released on November 26 in Japan.
- Invasion of Astro-Monster is released on December 19 in Japan.
In the Kaiju Multiverse
- Mysterious incidents begin to take place across the globe that involve objects being lifted into the air and then dropped from a great height. These incidents are revealed to be an attack by an alien race known as the Natarls. The aliens invade Earth, but are defeated soundly. (Battle in Outer Space)
- The spaceship P-1 is sent to a small planetary body behind Jupiter dubbed Planet X. There, an alien race is discovered that requests the assistance of humanity. After King Ghidorah was driven from Earth by Godzilla, Mothra, and Rodan, the space creature arrived on Planet X. The aliens, called the Xilians, request Godzilla and Rodan's help in defeating Ghidorah. This, however, proves to be a ruse, as the three monsters are placed under the control of the Xilians and sent to attack the Earth. Humanity, however, rises to the occasion and fights back, destroying the aliens and freeing the monsters from their control. Godzilla and Rodan then drive Ghidorah back into space. (Invasion of Astro-Monster)
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