Marcus Marc is a pilot who travels all over the world. In each trip he meets someone who tells him a great story. This time, a breakdown in one of the engines leads him to make an emergency landing,in the heart of the Congo, where he will meet Kibwe, a boy from the region. Kibwe explains to him how the mineral needed to make the processors that run many of the gadgets we use in our daily lives is obtained. And he does it by telling him his own life.