Pedro Juan Vignalle

A woman with a doubtful past tries to hide it from her teenage son and attempts to change, but she cannot.

When chain gang prisoners attack their guards, some of the hardened criminals escape Brazil's infamous Anchieta Prison amidst all the pick-ax carnage. The government dispatches a machine-gun squad to round up the fugitives, who have fled by foot and boat and now have begun to turn on each other.