Earth Resources Technology Services have sent a geological project into the deep, dark regions of the Congo. Their mission is to discover an ancient lost city known to be the last source of the precious blue diamond. The area is said to have a cursor it, a curse no-one believes until the entire party are mysteriously killed one night, Back at the project's base in Houston through a satellite link-up with the wrecked the camera, something that looks almost like a gorilla, almost like a man...

Karen Ross, is the young, nightly intelligent scientist sent to the Congo to discover what caused the untimely death of her colleagues. She has joined forces with Peter Elliot, an innovative primatologist who is desperate to bring his own project to the jungle - Amy - a gorilla fluent in sign language who has been having bizarre dreams about her past in the lost city...

Together, they enter a world lost to man for centuries where only primitive instincts for survival can save them from the dangers ahead.
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