While Thorgal, Aaricia and their friend Tjall rebuild the house of our hero on his island, little Jolan and Foot-d'arbre are taken away. Machiavélique Kriss de Valmor then comes to ask Thorgal to help him in a mission while she holds her son and her friend somewhere, in a place that she alone knows! Although he is obliged to accept and take with him Tjall and Aaricia who insists! So they will have to leave for the country Qâ on board a strange flying boat, to find Ogotai, the said god manipulator and allow Tanatloc, the good god to take over and thus bring peace to the world.