Cugel is easily persuaded by the merchant Fianosther to attempt the burglary of the manse of Iucounu the Laughing Magician, which is filled with precious magical items. Caught by Iucounu's trap, Cugel agrees that in exchange for his freedom he will undertake the recovery of a small hemisphere of violet glass, a magic "Eye of the Overworld", to match one already in the wizard's possession. A small sentient alien entity of barbs and hooks, named Firx, is attached to Cugel's liver to encourage his "unremitting loyalty, zeal and singleness of purpose". Firx's only form of communication with its host is to cause pain to his liver if Firx senses that Cugel is lapsing in his mission and his return home. Iucounu then uses a spell to transport Cugel via flying demon to the isolated Land of Cutz, which is very far away. There, Cugel finds two bizarre villages, one occupied by wearers of the magic violet lenses, the other by peasants who work on behalf of the lens-wearers, in hopes of being promoted to their ranks. The lenses cause their wearers to see, not their squalid surroundings, but the Overworld, a vastly superior version of reality where a hut is a palace, gruel is a magnificent feast, and peasant women are princesses — "seeing the world through
rose-colored glasses" on a grand scale. The people are not willing to just give Cugel an Eye, but insist that he be on a many-years-long waiting list for one. Cugel gains an Eye by trickery, and makes a perilous escape from Cutz. He then undertakes an arduous trek back to Iucounu, cursing the magician the entire way; this forms the principal part of the book. Cugel voyages across mountains, wastelands, and water, encountering unusual characters with curious beliefs and customs. He faces many challenges, including bandits, ghosts, and ghoulish creatures. Using a
Machiavellian mindset, he survives by tricking or betraying the people he encounters. He joins a religious cult and tricks them into crossing a vast desert, which leads to many of his comrades dying. Cugel also falls victim to the trickery of others, such as when he is fooled into being locked in a watchtower in a lakeside town or when he is lured into imprisonment in a cave by the devious Rat People. Finally, he gets a spell that magically returns him home. After many pitfalls, setbacks, and harrowing escapes, including a voyage back in time a million years, ending in the eviction of Firx from his system, and a grateful wizard speeding him by a spell back home, Cugel returns to Iucounu's manse, where he finds the wizard's volition has been captured by a twin to Firx. Cugel manages to extirpate the alien, subdue the magician, and enjoy the easy life in the manse, until he tries to banish Iucounu and Fianosther (who himself has come to pilfer from Cugel) with the same spell that the magician had used on him. But Cugel's tongue slips in his
hubristic attempt to utter the incantation, and the flying demon seizes him instead, delivering him to the same isolated spot as before. Author
Michael Shea wrote an authorized sequel,
A Quest for Simbilis (DAW Books, NY, 1974). Vance's own Cugel sequel was published as ''
Cugel's Saga'' in 1983. == Cugel's character ==