Colombia, November 1993: a reconstructed old passenger train, bespangled with yellow butterflies, is carrying one hundred musicians, acrobats and artists on a daring adventure through the heart of a country soaked in violence. The intention is to put on free shows for locals at railway stations along the way: vibrant spectacles involving music, trapeze, tattoo-art, an ice museum and, star of the show, Roberto the fire-breathing dragon. Leading the crusade of hope is Manu Chao with his band Mano Negra.