Philip Coppens, a regular on History Channel's Ancient Aliens, walks through the case that extraterrestrial visitors shaped early human civilization. He revisits the pyramids of Egypt with a construction theory that departs from mainstream engineering explanations, then turns to the crystal skulls, tracing their disputed discovery stories and the claims made about their origins. The film moves to Peru for the Nazca Lines and to Bolivia for the megalithic stonework at Puma Punku, presenting each site as evidence that ancient builders had technology beyond what conventional archaeology credits them with. Coppens leans on site visits, artifact close-ups, and his own on-camera analysis rather than a large interview panel, framing the argument as a pattern across unrelated cultures and continents rather than a single isolated anomaly. The presentation stays in the familiar Ancient Aliens register: confident narration, sweeping claims about non-human contact, and a steady accumulation of monuments offered as proof. Viewers already skeptical of mainstream archaeology will find plenty to chew on; skeptics of the ancient-aliens theory will find the usual gaps in sourcing.