Watch StreamingCommunity. The myth of Atlantis has only one source: Plato. He described, some 2,500 years ago, a country overflowing with wealth, located beyond the Pillars of Hercules, whose capital would have been destroyed by an earthquake, then engulfed in the depths of the sea. Following a miraculous aerial photo, Commander Cousteau finds himself on the trail of the lost civilization of the legend of Atlantis. Near the island of Dia, the team makes an extraordinary discovery…