Wangki is the river that separates Nicaragua from Honduras, a borderland one of the more remote of Central America, where he lives the indigenous Miskito people. The protagonists talk about their lives marked by moments of community, environmental scourges, memories of the Sandinista guerrilla, the fighting for human rights and the preservation of traditions. The film bears witness to the daily struggle of those who still believe that preserving the balance between man and nature is the only way to build the future. What happens if the sirens of Wangki stop singing?