Green Book is the upcoming drama / comedy that's based on a true story, and stars Mahershala Ali and Viggo Mortensen. When Tony Lip (Mortensen), a bouncer from an Italian-American neighborhood in the Bronx, is hired to drive Dr. Don Shirley (Ali), a world-class African-American pianist, on a concert tour from Manhattan to the Deep South, they must rely on “The Green Book” to guide them to the few establishments that were then safe for African-Americans.