White Boy Rick is the true story of Richard Wershe Jr. the FBI's youngest-ever informant. The movie stars Matthew McConaughey as Richard's father with YG and Danny Brown both playing small parts. The trailer for the movie can be seen above while a clip with the rappers in can see below, via Danny Brown's Instagram.
The official description of White Boy Rick reads: "Set in 1980s Detroit at the height of the crack epidemic and the War on Drugs, White Boy Rick is based on the moving true story of a blue-collar father and his teenage son, Rick Wershe Jr., who became an undercover police informant and later a drug dealer, before he was abandoned by his handlers and sentenced to life in prison."
The movie also stars Jennifer Jason Leigh and Atlanta's Paper Boi, Brian Tyree Henry and opens on September 21.