Lambusca, a man from the State of Paraíba, Brazil, goes to São Paulo, looking for a job. But he ends up working for a group of fishy loan sharks, collecting money. In one of his visits, the debtor dies. The police then starts chasing him, believing he had murdered the man.

After a heavy rain storm, several vehicles get stuck on a muddy road. Soon hunger and fatigue change people's manners, making them behave in a very noncivilized way.