Friends since childhood, Preta, Barbarah, Mayah and Lena are backup singers in a rap group fronted by a gang of testosterone-laden men, performing to huge audiences in the favelas. Convincing the guys to let them perform one song of their own, their musical stylings drive the crowd wild. Dreaming of the opportunity to make something of their lives, the girls form their own group, Antonia. But what chance do they stand against poverty, sexism and the everyday danger of life in the favela?