"Ancient Aliens: Origins" takes viewers back to where it all began, revisiting the most compelling mysteries explored over the past 15 years of "Ancient Aliens." In each episode, experts like Giorgio Tsoukalos, David Childress, William Henry and Jason Martell engage in thought-provoking conversations on topics central to the Ancient Astronaut Theory. From astonishing feats of engineering to enigmatic UFOs and sky gods, they delve deep into the series' extensive archives, reflecting on past investigations, sharing personal insights from their adventures and offering new perspectives on the ancient enigmas that have captivated humanity for centuries.