Throughout human history, there have been sudden and dramatic leaps in our evolution that simply cannot be explained by Darwinian theory. Ancient Astronaut theorists propose that the "missing link" is extraterrestrial intervention. The evidence may be found in our proto-human past, the key moments in our development, and the extraordinary changes witnessed in new generations being born. Could humanity be overdue for the next upgrade? And if so, what might be in store for the human race?

Across nearly every continent on Earth we can find similar remarkable stone structures of unexplainable engineering feats. Might the building of these megalithic sites have been directed by an extraterrestrial hand, as Ancient Astronaut theorists have long proposed? From the curious discoveries made at the Great Pyramid, at Teotihuacan and Stone Henge, new evidence may suggest that these structures are not only connected, but also part of a more profound--and powerful--network.