From ERBville Press: Nu, the hero of the book, was a mighty hunter. Nat-ul was the belle of the pre-historic tribe, greatly desired by all the young men, but Nat-ul loved only Nu and this is the story of the love of Nu and nat-ul through the ages. Weird, thrilling and mysterious, are the glimpses of pre-historic life. Brave, resourceful, valiant and daring is Nu, the perfect lover. Graceful and beautiful is Nat-ul, the primitive maiden.