More than just one more episode in the saga of the man that the gods have put to the test: a key album that sheds new light on the origins of the child of the stars. Revelations that announce a revival of tumults in the destiny of Thorgal and his own. Aaricia is tired of the life of wandering that her husband has led her. Jolan and Louve would like to live like all the teenagers of their age. No longer is there any opposition to their return to the country of Vikings. Although very reluctant to reconnect with a painful past, Thorgal ends up yielding to the desires of his wife and children. At the moment of embarking to sing to the North, there arise Tuaregs whose apparent hospitality nevertheless commits them to delay their departure. Sargon, the leader of these strange desert men, wishes to speak to them. But the interview is quickly transformed into interrogation. Dived into a hypnotic sleep, Thorgal reveals all of his extraterrestrial origins.