Gold has been found in the Klondike, a remote region in the Canadian far north Jasper, the manservant of 'Tenderfoot' Waldo, went to try his luck ... and vanished. Worried about his man, Waldo calls upon his old friend Lucky Luke. The two men will have to make the dangerous trip to the Klondike, only to face all those who, in that desolate, inhospitable land, will stop at nothing in order to fleece their fellow man.