Lila and Jay Cooper have joined their dad on a mission to the jungles of Central America, where a group of American treasure hunters have already become the victims of the deadly curse of Toco-Rey. Before Dr. Cooper can solve the mystery, his children are kidnapped and his integrity is put to the test. What price will he pay to get his children back? Is the treasure in the burial tomb of Kachi-Tochetin really worth more than gold? This is the sixth book in The Cooper Kids Adventure Series.