Tom is both elfin and human, and running for his life. Cast out from the elfin Tribe, he must hide among the hated humans, whom the Tribe call "demons." Tom's Tribe-half seeks freedom and thrives on a connection with nature which lets him "call on the stars" and turn invisible when in danger. But Tom's human side is emerging, and he is confused and appalled by this change. For he fears the twining emotional bonds, which he sees literally as vines, that bind one human to another. But when he is helped by a kind "demon" girl, it is these strong bonds that save him-and draw him to his true home.