The Elf King's son, Trellis, is still after them, but this time he's accompanied by a mysterious and dangerous guard, Luger. Then an equally mysterious fox, Leon Redbeard, steps in to help. This new fox friend offers to take Em on the perilous trip up Demon's Head Mountain to find the antidote she needs. Miskit is suspicious, Navin is worried about being left behind, and Emily is in the toughest spot of all. She's got to let loose the power of the amulet—without losing herself!