There are people living between the dust and the sea, surrounded by the smoke which comes from a steelworks. Residents in Santa Cruz, in Rio, Brazil, have been suffered the consequences of ThyssenKrupp Companhia Siderúrgica do Atlântico (TKCSA) for more than ten years. Know in this film the history of an invisible Rio de Janeiro, which you will not see on postcards and advertisements of mega sports events. “Truss”, a documentary by Instituto Políticas Alternativas para o Cone Sul (Pacs), is an outcry over the powder that invades lives, backyards and gardens in the name of a predatory development model. It is a sensitive invitation to join in residents’ struggle for justice.