Using a checklist derived from Plato's ancient writing as his guide, Zach begins an epic 2-part journey to find the lost civilization of Atlantis and proof that it was a real empire. He begins in Greece where he dives deep into the heart of the Mediterranean Sea, looking for signs of Atlantis amongst the relics of a sunken settlement. His journey leads him to the Palace of Knossos in Crete, where he finds many similarities between Atlantis and the mysterious Minoan civilization. Ultimately, he lands on the fabled island of Sardinia, where he uncovers even more connections to Plato's checklist and possible evidence of an advanced ancient alphabet.