Marine archeologist Jack Howard may have found the key to uncovering Atlantis, the legendary sunken city purportedly built by a flourishing culture. A scrap of papyrus discovered in an Egyptian desert, which may contain a secondhand account of the lost city, sends Jack scrambling to assemble a team, including Costas, an MIT- and Stanford-trained expert in "submersible technology" and Katya, a beautiful Russian Atlantis specialist.