So we've been taught that the birthplace of the human race is Earth. But it's not. It's actually a planet in the Cunabulum System called Orous. A little of over a billion years ago Earth was discovered during what is called The Great Expansion. At the time Earth was inhabited by a branch-species of Saurisapian, a dangerous human predator called the Sargorn. Obviously before any colonization or ressource development could be done safely to Earth, a large-scale extinction event was manufactured.
Edit 18 days later:
[spoiler]It's a movie quote.[/spoiler]
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This sounds so stupid, how come we haven't found any of the remnants of their ships if this crazy conspiracy was somehow true