In Nova Scotia, on the shores of Baie Sainte-Marie, the ghost of an evil sorcerer returns to haunt an Acadian community ... which is no mystery! The Three Musketeers, Gabriel, Ania, Mamadou, not to mention their faithful dog Dali, are therefore leaving New Brunswick for this eighth thrilling adventure. With the help of Granny Georgette, Professor Jarnigoine and a somewhat ridiculous look-alike of Indiana Jones, will this little team succeed in defeating an evil ghost? And this, before the misfortunes multiply?