Two thousand pilgrims, two thousand suspects for a murderer! A meticulous investigation in a desert country and the most dangerous! In the cold area of the little Gottland, the master inquisitor Nikolai and his elf Boldween make a macabre discovery: a body is anchored in the ice. Very quickly, the link is made between the victim and the sacred pilgrimage of the blue dragon. The inquisitor decides to dislodge the culprit and interferes among the travellers. The investigation is bogged down and other murders are added to the first... The murderer hides himself in the middle of two thousand pilgrims and the motive remains a mystery!