The Thornberrys are in Egypt to film the elusive Caracal cat. While Marianne and Nigel go off via camel to film Eliza, Tyler and Darwin go exploring. While wandering through the desert they fall into an ancient burial chamber. Eliza and Tyler will have to work together to avoid the booby traps that have been set to discourage grave robbers. Meanwhile Debbie is convinced she is a descendant of Cleopatra.