Is Atlantis a myth, or a forgotten chapter of human history? For 2,000 years, the world has been haunted by Plato’s description of a technologically advanced civilization swallowed by the sea in a single day and night. In this documentary, Naked Science separates fact from fiction. We explore the 5,000-year-old temples of Malta, dive to the mysterious “Bimini Road” in the Bahamas, and use side-scan sonar to investigate 2,000-foot-deep structures off the coast of Cuba. Finally, we examine the strongest candidate: the volcanic island of Santorini, where a Minoan city was buried under 200 feet of ash. Was Atlantis a real “mother civilization,” or simply a cautionary tale from the mind of a philosopher?