Dragon Storm #5: Kai and Boneshadow

"Kai and his fellow dragonseers practice their powers in a hidden cavern known as Guild Hall. But when the royal prince invites them to the palace, the dragonseers must leave the safety of their hideout. There they encounter a fearsome dragon and a mystical potion in a secret lair! The others sense danger, but Kai feels strangely drawn to a mysterious dark force, one with the power to destroy"--