Portugal 1812 - The Spanish village of Adrados has been overtaken by a horde of French, Spanish and British deserters and they have taken two English women hostage, Sarah Dubreton and Lady Isabella Farthingdale. Captain Sharpe is assigned the task of dellivering the ransom, much to the disgust of Sir Augustus Farthingdale. Sharpe and Harper enter the convent where the women are being held and are confronted by two French officers. Sharpe learns that one of the officers is the husband of Sarah Dubreton and they are on the same mission.To Sharpe's dismay, he learns that Hakeswill is involved and he has increased the ransom price, giving Sharpe five days to come up with the extra money or the women will be raped. Nairn receives information that the French intend to invade Portugal from Adrados and decides to thwart the plan. Sharpe is promoted to major and given command of the 60th Rifles in order to secure the safety of the women and prevent the French from taking the town.

1813 - A grieving Sharpe is challenged to a duel by a Spanish Marques who demands an apology for having forced his attentions on his wife. Dumbfounded, Sharpe protests that he has never met La Marquesa and is innocent of any wrongdoing. Sharpe refuses to apologise and the duel goes ahead. Just as Sharpe holds his sword against the Marques' throat, the duel is stopped by Nairn who insists that there was no duel - just friendly sword practice. Later that night, the Marques is murdered and the following day, Sharpe is arrested for his murder. Witnesses testify that Sharpe was the murderer and he is sentenced to death.However things are not what they seem. In the middle of the night, Harper is reunited with Sharpe and they are given the task of capturing the beautiful La Marquesa so that the British can discover the French's next move.