The year is 1985. Oliver, a boy with an overflowing imagination, moves with his family to the southernmost corner of Europe, just as Halley's Comet is about to pass by. These events will mark a before and after in the emotional life of Óliver, who will look to the stars for the solution to his problems in the new school, in the neighborhood and at home. To make matters worse, his grandfather, nicknamed "el majara" is encouraged to help him interpret the comet's message and take a step forward in his new Universe.

In 1575, the young soldier Miguel de Cervantes is captured on the high seas by Barbary pirates and taken to Algiers as a hostage. Aware that a cruel death awaits him if his family does not pay his ransom soon, he finds refuge in his passion for storytelling.