Each morning hundreds of the capital's buses roll out from Stockwell Bus Garage, a place that helps to keep London's life-blood flowing. But it's the people who work here that make the bus garage truly extraordinary. Made up of hundreds of people from more than 80 nationalities it is the UK's most diverse workforce. This uplifting film tells the stories of these people. Akwasi is a Ghanaian Chief who has turned his back on the offer of tribal status (and seven wives) in order to drive the 170 to Putney. 73-year-old Nina was a Hungarian revolutionary and is 'the Queen of the Garage' having driven the 87 to Wandsworth for thirty years. As the son of a London bus driver becomes the capital's new mayor, The Secret Life of a Bus Garage introduces us to one of the most remarkable faces of modern Britain, but one we rarely see on our televisions.