An enormous slow-moving industrial convoy becomes a terrifying military target when civil war breaks out in a southern African state...

It was no ordinary juggernaut. Longer than a football pitch, weighing 550 tons, and moving at an average of five miles per hour, it also carries a load whose worth is almost priceless.

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 - a target of ambush and threat, with no way to run and nowhere to hide...