Summer 1813 - An angry Sharpe goes in search of the British infantry who failed to prevent the French retreat from a recent battle. Sharpe discovers that the infrantry men are deserting and is unable to prevent it. Meanwhile, Ellie Nugent, a relative of Wellington, rides into camp accompanied by her mother. They are searching for Ellie's father who has gone missing while looking for Aztec gold in hills nearby. Wellington refuses to help them and orders them to return home. Wellington has more serious problems to contend with as he is running short of men in the army and has agreed to exchange 52 captured deserters for Baker rifles. Sharpe is ordered to make the exchange and is followed by Ellie and her mother.