The novel's structure is dominated by the theme of a quest, yet the deeper narrative significance lies in Kerin's coming of age. With the novel's trademark wit, this quest is far from the usual epic endeavor—there's no dark sorcerer threatening to seize power. Instead, Kerin embarks on a mission rooted in his family's trade: the art of clockmaking. His journey takes him to the distant lands of Kuromon, a place shrouded in mystery, to unveil the secrets behind the Kuromonian clock escapement.

Despite a labyrinth of challenges, Kerin's quest is, at its heart, one of industrial espionage. In a twist of irony, upon reaching his destination, Kerin discovers that the legendary clock's mechanism is readily available to anyone who simply asks. He is granted the opportunity to observe its intricate workings and even sketch them. This supposedly guarded trade secret turns out to be as accessible as a public library. However, the transformative essence of Kerin's expedition lies not in the discovery itself, but in the metamorphosis he undergoes.

Starting his journey as a timid, introverted youth, Kerin evolves through the tapestry of his experiences. He emerges with newfound courage and insight into himself. Returning home, he does not only bring back schematics but also a loving wife. The quest, presented with humor, ultimately serves as a backdrop to Kerin’s evolution into manhood, juxtaposing the light-hearted quest for a trivial object with the profound journey of personal growth.