Having survived near disaster at the battle of Fuentes d'Onoro, Fin Ross continues his adventures with the Horse Artillery as the army advances into Spain, having to overcome the rugged mountain landscape, as well as an army of deserters. Heading for the battle of Vitoria, Fin works with his trusted friend Thomo to bring the guns to their allotted position against the advancing enemy and has to come to terms with his respected captain being falsely arrested whilst yet again facing the man who hates him more than any other...