The island of Asaruthe has sheltered the Dawnmaid, Myriadne, for the past sixteen years, but Yr has fallen prey to a deadly plague, and it is clear she must leave soon. Katkin travels with Myriadne to help her free the Firaithi from Maggrai's diabolical laboratory. Meanwhile, Gunnar Strong Arm's twin sons, Jakob and Lut, are feuding with each other. When Jakob carelessly gap shifts, he leaves a trail that Maggrai's minions can follow...