To investigate the death of her father, a well-known scientist who died under suspicious circumstances a few years earlier, young Isabel arrives in Africa. With the help of George, an experienced local hunter, Isabel organises an expedition in the heart of the peril-laden jungle to locate the place where her father was last seen, only to encounter unforeseen difficulties, formidable adversaries, and the dark-haired beauty, Luana: a savage protector of the virgin forest. Can Luana, the girl of the jungle, solve the mystery of the scientist's untimely demise?