For the very first time, Lake Titicaca, a mythical jewel nestled in the heart of the Peruvian Andes, is the subject of an ambitious underwater exploration mission. Fifteen specialists from around the world, archaeologists and scientists, join forces to probe the mysteries of its icy waters. Their quest: to unearth unprecedented remains of pre-Columbian civilizations, perhaps the most extraordinary ever unearthed. What if these ancient legends concealed a forgotten truth?