 Desmond Jordan is a archaeologist what found a old parchment, in where is mentioned the history of a  loudspeaker mountain , guardian of a ancient and wished treasure. After of save to Anthea, the Khalif s wife, both run of evil Lieutenant Ryker and his legionaries and too of the El Hallem, a dangerous desert bandit, and while the Khalif watch to his wife, the Jordan s son, Philip, travel from London to Egypt for to find to his father, the  loudspeaker mountain  and to reveal the mystery hidden behind It.