After escaping certain death thanks to the courageous efforts of Halt and Horace, Will returns to Skandia to find that it is being invaded by the Temujai army and so must gather up a group to stop them before they manage to destroy Skandia ...
Chasing the Skandian slave-traders who kidnapped Will and Evanlyn, Ranger Halt and warrior student Horace find themselves in the frozen northern islands, where they battle a ruthless black-clad knight as they attempt to rescue their friends ...
A chance discovery will lead them to their prey, but the pirates have a well-fortified position. The Herons must drive out the invaders - and to succeed, Hal will need to devise a foolproof plan.