It is longer than a football pitch, weighs 550 tons and moves at the average of five miles per hour. Its job and that of company troubleshooter Neil Mannix is to move a giant transformer across Nyala, an oil-rich African state. Outwardly politically stable, Nyala erups in civil war. And Mannix finds himself, and the juggernaut, at the centre of the conflict with no way to run and nowhere to hide.