Brother and sister dragonology students Daniel and Beatrice Cook are
looking forward to returning to their studies with Dr. Ernest Drake and
Erasmus, their dragon tutor. But when they discover that the evil
dragonologist Alexandra Gorynytchka is searching for the fearsome Hammer
of the Dragons--an ancient weapon that can kill hundreds of dragons in a
single stroke--Dr. Drake and the children pursue her all the way to the
Lost Island of the Dragons, where she is amassing an army of enslaved
dragons. There they learn of the Dragon Prophecy, according to which the
return of the Hammer of the Dragons can be stopped only by two children
"wise beyond their years in the ways of dragons." Could the prophecy
point to Daniel and Beatrice? And can they save dragonkind before it's
too late?