About the book: 2003 / The invasion of extraterrestrial life and its clash with a primitive tribe is impressively described in the story "Xypehuzy". Ancient earthlings become witnesses and victims of the invasion of certain crystalline structures trying to conquer our planet. The future leader of a powerful alliance of earthly tribes manages to spot the “Achilles heel” of the aliens: they are not immortal! And earthlings, albeit with considerable damage to themselves, manage to defend their native planet…