A professor's archaeological dig finds a great Ancient king's tomb. On his way to Santa Fé University through Schnozzola (big nose) Indian territory with the mummy, which carries a legendary talisman, he attracts thieves and an undertaker, fascinated by the lost embalming technique. The Indians, descended from the king's people, believe the talisman brings a brave chief supreme power. They decide to seize it, but the medicine-man wants to rule himself- or not just him? Lucky Luke escorts the professor.