The last dragonslayer #4

"The Trolls have invaded, and the Ununited Kingdoms have fallen to their murderous rampage. Assisting them is The Mighty Shandar, the most powerful sorcerer the world has ever seen. Their victory seems complete. Or is it? Orphan Jennifer Strange, Court Mystician and ex-Dragonslayer, plans a counter-attack with only a few resources to hand: An uncrowned Queen with no nation; Two fussy dragons, two sorcerers, and no magic; A dozen spoiled princesses; A vegetarian Troll; A sarcastic sidekick; No plan; And only 48 hours. When the entire planet is about to fall prey to a diabolical plan by a despicable despot, sometimes what you need most of all is a sixteen-year-old girl with courage, ingenuity, and the loyalty of true friends"--Publisher's description