We saw the villain fall off a cliff at the end of the film, but he was lucky not to die, but he was irradiated, his body mutated and evolved, and later he found the robot that fell before. Because of the lack of food, in order to survive, he transformed himself into a half-human half-machine , Ambition began to want to rule mankind and began to call himself God. Later, in order to fight against the mechanical insects, the Protoss was created.
As for the protagonist's family returning to the city, a coalition government appeared on Earth, controlling most of the population. However, the United Earth Government is an authoritarian and terrifying government. They destroy religions and different languages, and exile the aliens into the interstellar space. This is the origin of the human race.
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