Investigators use cutting-edge tech to explore seven ancient pyramids from around the world: the Step Pyramid of Djoser, the Greater Pyramid at Caral, the Bent Pyramid at Dahshur, the Great Pyramid at Giza, the Black Pyramid, the Pyramid of the Sun at Teotihuacan, and Tikal. As experts explore their lost labyrinths and alien relics, they discover unexplained connections between cultures thousands of miles and years apart.