Black and Blue: Legends of the Hip-Hop Cop is an inside look at one of the dirty secrets of the NYPD, the infamous 'rap unit'. It takes a look at the work of Detective Derrick Parker, the retired cop assigned to put together this unit after the murder of Notorious B.I.G. Parker reveals the dossiers kept on many of the famous hip-hop artists including Snoop Dog and 50 Cent. It also goes into the truth about how performers were harassed, questioned and presumed to be involved in criminal activity. The contents of the infamous 'Rap Binder', used to train new officers, are also revealed. Focusing on this controversy, the movie reveals methods and guidelines that show the extent of the profiling that was going on and that the whispered rumors were only part of the truth. The documentary is narrated by Saul Williams, who also talks to a number of the performers including 50 Cent and Ice-T.