At one point, a sophisticated socialite, a wealthy and very talented musician realizes the need for a personal driver and a real bodyguard. The plot of "Green Book" he employs a person who is not suited for the job. In fact, Tony "Loudmouth" is a bouncer, whose language without bones. His finger in your mouth, give only chat on any topic. But with all this, it keeps the beat and wonderful waving fists. It is with such a man embarks on a tour of the musician that will forever change the lives of both heroes.