L'horloger de la comète, written by Tome and drawn by Janry, is the thirty-sixth album of the Spirou et Fantasio series, and the fourth of the authors.

In The Comet's Watchmaker, The Count de Champignac goes to visit his great nephew and entrusts the castle to Spirou and Fantasio, who both hope to relax.

The individual proves to be the descendant of the Count, Aurélien, come from the future to look for the seeds of some plants that are extinct in his time in order to preserve them, located in the forest of Palombia.

Knowing about the hostile environment of the Palombian jungle, Spirou proposes that he and Fantasio accompany Aurélien.

Finally, Aurélien's vessel disintegrates, but strange individuals come from even further in the future to save them and to bring them back to their respective times.