Documentary about the culture of Tartessos, which is believed to be the first civilization in Western Europe. Tartessos was located in the triangle formed by the current Spanish provinces of Huelva, Seville and Cádiz. A mixture of history and legend, for some, is the Atlantis mentioned in the Bible and in Avienus' Ora Marítima. The National Geographic Society grantee, historian, archaeologist and professor at the University of Huelva Claudio Lozano Guerra-Librero travels to the Guadalquivir delta and Extremadura to show us the latest archaeological discoveries of this great civilization that was considered a myth. Adventure, science, new technologies... A trip to the past, where the Tartessian culture will be excavated and technologically recreated, to understand how they lived and disappeared