It is longer than a football pitch, weights 550 tons, and moves at an 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 erupts 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.