The action takes place in a dystopian Buenos Aires in 2068 (now called Darwin), where the sinister Phizar, head of a dark corporation, chaotically governs the Southern Cone of the American continent. Dr. Crux is an old rebel scientist who fights the Phizar regime, and his son Juan Crux is the one who must become the hero expected to fight the villain and his henchmen and free the city from the dome that prevents him from making contact with the outside.