A Canadian geologist returns to Africa after ten years to resume prospecting for deposits of coltan, an essential mineral for the manufacture of cell phones and other uses in electronics, whose consumption is increasing exponentially in the world. The struggles for its possession cause a humanitarian catastrophe due to the continuous killings that the militias carry out and the horrible situation in which the miners, true modern slaves, work in an undeclared war that has produced millions of deaths in the Congo. The search action does not go unnoticed by obscure interests linked to the global business of coltan, and who will try at all costs to stop new players. To do this, they will hire the services of merciless mercenary gangs willing to do anything to fulfill their mission. A vibrant thriller that will keep you on your toes from start to finish.