Four children separated by vast distances all undergo the same ritual watched by cloaked strangers. Four flashes of light erupt and from them emerge the unmistakable shapes of incredible beasts - a wolf, a leopard, a panda, a falcon. Suddenly the paths of these children - and the world - have been changed forever. Enter the world of Erdas where every child who comes of age must discover if they have a spirit animal - a rare bond between human and beast that bestows great powers to both. A dark force has risen from distant and long-forgotten lands and has begun an onslaught that will ravage the world. Now the fate of Erdas has fallen on the shoulders of four young strangers ... and on you.