Brazilian MD Drauzio Varella starts AIDS prevention in Brazil's largest prison, Carandiru, in São Paulo, where the population is nearly double its 4,000 maximum. Doc learns from experience and mainly stories the tragic stories of hideous crimes which landed scum there and passionate dramas adding otherwise decent people. Just when he believes to leave the prisoners happy with a soccer tournament, a silly clothing line argument kick-starts a politically opportune revolt repression.