意大利的黑暗世界充满政治阴谋。情报专员丹堤调查一宗离奇的将领谋杀案,唯一的线索是一张《至尊牌》。丹提发觉此阴谋牵涉政府高层,而他须要《至尊牌》的协助,缉拿凶徙归案……An Italian policeman investigates a series of murders involving people in prominent positions. Left behind at each murder scene is a drawing of a salamander. The policeman begins to suspect these murders are linked to a plot to seize control of the government.