Marta, a 15-year-old Spanish student is moved to investigate what is failing in children’s education, especially in developing countries. Along with her friend Berta they use their summer holidays to travel to the island of Ibo in Mozambique, one of the poorest countries in the world. Here they find a system of sustainable education that has been running for years, a place where charity and free help are considered the worst stimulus for growth. Marta will try to understand, through interviews with relevant experts, the reasons why in such a globalized world there is still such a poor education system. Marta then travels to the world forum of education at the United Nations, where she has the opportunity to present her experiences to the international community.