An unknown adult unexpectedly turns up in the lives of Gilmar and Lanh at the same time but in different parts of the world. Gilmar lives in Bolivia and his father works in the old silver miines of Cerro Rico in the city of Potosí; Lanh is an orphan, she was taken in by the Thuy Xuân orphanage in Vietnam after her parents died when the Perfume River flooded. From their native cities, accompanied by the strange adult, they each undertake a journey that will lead them to Sas, a child soldier who, tries to escape during the Sierra Leone civil war to find his family, return to his former life and set out on a new future. The journey brings together three points on the planet, three languages and three cultures whose only relationship is a book whose photographs have disappeared since Sas was kidnapped from his school. The three boys are eleven years old. They are searching for each other, they need to find each other.