The gripping and exciting story of impossible 16-year-old twins, a black girl and a white boy, who find themselves being called on by a mysterious source to come to its help. Answering this call, however, reveals that they are part of a world much larger than our own, one filled with deep mysteries and life-changing revelations; with Lurkur Witches and evil shadowraiths; with new loves and devastating betrayals; and with battles for survival and a realization of their own momentous destinies.