Returning, Eudoric finds his promised bride has run off with a minstrel, and his feudal lord Baron Emmerhard disinclined to knight him for his heroic exploit; he consoles himself by pursuing a scheme to establish a stagecoach line like those in Pathenia.

The pattern is repeated when he is commissioned to capture a unicorn for his ultimate overlord Emperor Thorar IX of the New Napolitanian Empire, intended as a gift for the visiting Grand Cham Gzik of Pantorozia.

Seeking to extend his stage line into Letitia, capital of the kingdom of Franconia that borders the empire to the west, his reputation for getting things done leads to him being deputed to rescue King Clothar's sister Yolanda, held captive in the rude neighboring realm of Armoria.

Fighting with each other and dangers along the way, they encounter the restless ghost of a king cursed to endure eternal boredom in his tomb, an orthodox ogre who kills and eats those of the wrong faith, and the soldiers of the hostile duchy of Dorelia.

By calling on the aid of Dr. Tsudai, a Serican sorcerer whose life he had saved during his earlier stay in Letitia, Eudoric is ultimately successful in freeing his three predecessor-husbands from statuehood and escaping their lethal spouse.

The Incorporated Knight and its sequel The Pixilated Peeress are both set in the medieval era of an alternate world sharing the geography of our own, but in which a "Napolitanian" (Neapolitan) empire filled the role of Rome and no universal religion like Christianity ever arose, leaving its nations split among competing pagan sects.

"[8] Roland Green, in The Booklist, called the book "a pleasant fantasy romp," noting that while it was "likely to be released in paperback in due time," its "high quality definitely makes [it] worth considering in hardcover.

[2] The main plot device of bickering male and female protagonists not destined for a happy ending together is featured in several late de Camp novels, notably The Prisoner of Zhamanak (1982), The Bones of Zora (1983), and The Pixilated Peeress (1991).