Humanity on Planet GK has reached a civilization age of six digits. After discovering that their planet is doomed to perish, two people set out into space to search for a planet suitable for human habitation: the discoverer of Earth, codenamed Sun, and the designer of an intelligent spacecraft, codenamed Taiyin.
The interstellar craft controlled by Sun and Taiyin accidentally collided with Earthlings who were on their way to the Moon. So the two followed them from the Moon to Earth in insect-shaped spacecraft.
However, when the people of Planet GK learned that Earth already had a civilized human population, they abandoned their plan to seize the planet by force. They even prepared to give up on going to Earth and search for another planet suitable for human survival.
Just then, the people of Planet GK discovered that some of the interstellar experiments required for their plan to escape the planet had to be conducted on Earth. So they decided to send Miaomiao to assist Sun and Taiyin, carrying intelligent weapons, and secretly complete these experiments on Earth. However, the results of these experiments were beyond anyone's control.
