Alexis Nadeau, director of exhibitions at the Museum of Civilization in Montreal, received threats signed: Quebec's golden dog. The three musketeers Gabriel, Ania and Mamadou immediately begin to investigate. Gabriel even sees a real golden dog walking through the streets of Quebec! Could it be the same legendary golden dog that stands on Porte St-Jean at the entrance to Old Quebec. Did the weird professor, Bazil Bizaroff, have anything to do with this? And how to protect against a ferocious dog whose fur is covered with flames?