Sixteen-year-old half-alien Sydney Chambers leaves Earth to seek his long-missing father, and unearths a devastating, centuries-old secret about humanity.

Enna hopes that her new knowledge of how to wield fire will help protect her good friend Isi--the Princess Anidori--and all of Bayern against their enemies, but the need to burn is uncontrollable and puts Enna and her loved ones in grave danger.

Today, an ancient world is vanishing right before our eyes: the age of giant animals. Over 40,000 years ago, the earth was ruled by megafauna: mammoths and mastodons, saber-toothed tigers and giant sloths. Of course, those creatures no longer exist, and there is only one likely reason for that: the evolution and arrival of the earth's only tool-wielding hunter, the wildly adaptive, comparatively pint-sized human species. Many more of the world's biggest...