Emily and Navin's mother is still in a coma from the arachnopod's poison, and there's only one place to find help: Kanalis, the bustling, beautiful city of waterfalls. But when Em, her brother, and Miskit and the rest of the robotic crew aboard the walking house reach the city, they quickly realize that seeking help is looking for trouble, dangerous trouble.The Elf King's son, Trellis, is still after them, but this time he's accompanied by a mysterious...

As the Elf King makes new amulets that will give him power to destroy Windsor once and for all, Emily and her friends desperately make preparations to defend Cielis in what will inevitably be a brutal war, hoping that it will be enough to defeat the Elf King.

"Emily, Trellis, and Vigo visit Algos Island, where they can access and enter lost memories. They're hoping to uncover the events of Trellis's mysterious childhood -- knowledge they can use against the Elf King. What they discover is a dark secret that changes everything. Meanwhile, the Voice of Emily's Amulet is getting stronger, and threatens to overtake her completely" --

"When Emily loses control of her Amulet, she is imprisoned in the Void, where she must escape the influence of the Voice, while her brother, Navin, travels to a space station where the Resistance is preparing to battle the approaching Shadow forces"--OCLC.

Emily and her friends go to Cielis for help, but something is very wrong, and as the number of Stonekeepers gets smaller and smaller, an awful secret is slowly uncovered that means the certain destruction of everything Emily fights for.

Navin and his friends travel to the city of Lucien searching for a beacon that will help in their battle against the Elf King. Meanwhile, Emily returns to the void with Max, a follower of the Elf King.

Copper and his dog Fred enjoy a series of imaginative adventures, from soaring through marvelous worlds to sailing, surfing, and shrimp racing.

"Emily, Trellis, and Vigo visit Algos Island, where they can access and enter lost memories. They're hoping to uncover the events of Trellis's mysterious childhood -- knowledge they can use against the Elf King. What they discover is a dark secret that changes everything. Meanwhile, the Voice of Emily's Amulet is getting stronger, and threatens to overtake her completely"

Emily survived the chaos of the Guardian Academy, but Max Griffin has stolen the Mother Stone. With it, the Elf King forges new amulets that will give him the power to invade and destroy the nation of Windsor. Emily and her friends lead the soldiers of the Cielis Guard in a fight to stop him, but Max stands in their way. And when she seeks information from the Voice of her Amulet, she discovers that the Voice is much more sinister than she ever could...

Emily and her brother Navin head for Kanalis to find an antidote for the poison that is killing their mother.