Orphaned since she was ten years old, Diana was born and raised in a poor neighborhood and today is the ruthless leader of a gang of criminals. While being able to kill ferociously, she is loyal and capable of the greatest acts of generosity. The robberies are organised by her and the gang has unlimited respect for her decisions. This dangerous woman is a challenge for the Polícia Judiciária, which spares no efforts to try to catch her. Augusto, the chief inspector, focus on her. He has no proof, but he is sure Diana is the strategist of most robberies and almost all drug distribution in Lisbon. Although he is always one step behind, his prosecution is almost unhealthy. Dismantling the gang is his obsession, but it will also be his defeat.