A Scottish monk takes revenge on Napoleon

It is 1808. Napoleon is nearing the zenith of his power. Desperate to dent his supremacy, the British government sends James Robertson, a middle-aged, overweight monk on a secret mission to persuade a Spanish general to betray Napoleon. Meanwhile. Jacques Marquet, a passionate supporter of the Revolution, is appointed chief spy-catcher for northern Germany, despite his career being blighted by his aristocratic birth.

Landed on the north German coast, Robertson narrowly avoids capture. In Hamburg he is spotted by Marquet but on this occasion managed to evade him. The monk discovers that the Spanish general and his troops have moved into Denmark and travels north.

A desperate game of cat and mouse then unfolds as Robertson tries to persuade the general to defect, while all the time avoiding capture by Marquet. The journey will take him through Denmark, Germany and into Bavaria as the Scottish monk continues his fight against Napoleon.