Nina is an elderly woman who lives alone and feels distressed by the increasing violence in her neighborhood. Amidst conflicts with her neighbors, she decides to film the movement of drug traffickers from her window, hoping to assist the police. After months of recording suspicious activities, her initiative attracts the attention of a journalist, who approaches Nina and offers to support her in her mission.

Two children flee together with a grown up from a slum in Rio because this man had problems with the local drug lord. They end up in the house where a rich American citizen lives with his daughter.