Alexis Nadeau, director of the exhibits at the Civilisations museum in Montreal, has been receiving threats signed: Québec Golden Dog. The three musketeers Gabriel, Ania and Mamadou immediately start to investigate. Gabriel even spots a real golden dog walking around the streets of Quebec! Would it be the same legendary golden dog that stands on the Porte St-Jean at the entrance of the old Quebec. Does the bizarre professor, Bazil Bizaroff, have anything to do with it? And how do you protect yourself against a ferocious dog whose fur is lined with flames?