From the publisher:
Far to the south, deep within the jungles, tribes of wild musties who did not go north with Merle's ancestors still live. But now, they find themselves locked in a vicious struggle with a deadly and terrifying enemy they do not comprehend. Amani and Ayori set off to find these lost tribes, and bring them to a new home of peace and prosperity in the north. But will the Dark One, an ancient and hideous predator, allow them to survive?