This documentary will take us to one of the most hostile habitats of the planet: the grand Sahara desert. The Tuaregs are also known as the “Blue Men” due to the colour adopted by their skin, soaked by the indigo used to dye their veils. They have always been feudal lords who dominated this immense territory. They assaulted caravans and controlled the routes. Travellers always feared them for their fierceness and ferocity. They are untamed people, impossible to subjugate. Their strict rules, where honour and hospitality are among the main ones, determine the life of their different tribes. We will travel next to the Madugu, who lead their salt caravans through the Tenere, a desert within a desert, also known as the “Anvil of the Sun”. We will know their customs, their beliefs and their way of life and we will discovery the challenges they face today to continue living as they have always done: with no borders or governments.