In this thrilling sequel to The Stonekeeper in the Amulet series, Emily and her brother Navin head for Kanalis, a beautiful and mysterious city of waterfalls, where they hope to find the antidote for the poison that felled their mother. That cure lies in the eggs of a giant serpent atop Demon's Head Mountain, but the kids' archenemy, Trellis, is headed for the peak, too.

A battle that will engulf all of Kanalis is looming. It´s up to Em to triumph over evil while controlling the amulet's power...without losing herself!

After tragedy strikes their family, Emily and Navin move with their mother into the old, mysterious home of their great-grandfather. On their first night in the strange house, Emily and Navin's mom is kidnapped by a tentacled creature. Determined to rescue her, Emily and Navin are led into a world of robots, talking animals, flying ships, new friends... and enemies. Emily learns that she is a Stonekeeper and essential to the survival of this world, and that her incredible story is only just beginning.