An undiscovered planet with boundless treasure, hidden for two thousand years, and it just so happened to be the legendary origin point of the entire human race?
Two-thousand years, seems a tad short of a time span, for Earth to become a such a legendary mystery. Not having the coordinates is possible, but still a stretch. Given things aren't post-apocalyptic or dystopian, advanced tech and savy interstellar civilization, this whole thing seems too ludicrious and silly. Several thousand years more, maybe. Two-thousand years, no way.
