The Dark Elves are on the march, the barrier between the magical world of Celahir and the human world has almost vanished, and the Spider Queen is consolidating her power. Despite the fact that three of the four stolen Elven Bow gemstones have been recovered, the Light Elves are fighting a losing battle in Celahir. Nana, Beebop, Aidan, and Maggie are ignorant of these developments as Christmas break begins. However, they start seeing ravens everywhere, a dragon lands on the roof and then chases them down the road, and they are about to be incinerated when the Elven Scout Alatariel and his sisters rescue them. Escaping on the backs of the legendary Arien - giant falcons that awakened to defend Celahir - they fly off to Celahir. Things get even worse when they arrive in Celahir and have to recover the final gemstone - the Ruby - from the clutches of a lava monster, save Maggie from the evil elves Enelya and Elerosse, and restore the gemstones to the Elven Bow!

The Dark Elves are on the march, the barrier between the magical world of Celahir and the human world has almost vanished, and the Spider Queen is consolidating her power. Despite the fact that three of the four stolen Elven Bow gemstones have been recovered, the Light Elves are fighting a losing battle in Celahir. Nana, Beebop, Aidan, and Maggie are ignorant of these developments as Christmas break begins. However, they start seeing ravens everywhere, a dragon lands on the roof and then chases them down the road, and they are about to be incinerated when the Elven Scout Alatariel and his sisters rescue them. Escaping on the backs of the legendary Arien - giant falcons that awakened to defend Celahir - they fly off to Celahir. Things get even worse when they arrive in Celahir and have to recover the final gemstone - the Ruby - from the clutches of a lava monster, save Maggie from the evil elves Enelya and Elerosse, and restore the gemstones to the Elven Bow!

Four gemstones of the Elven Bow have been stolen by the Dark Elves. Without the gemstones, the barrier between the human world and Celahir is deteriorating and the balance between good and evil in both worlds is tipping toward evil.

In Celahir, the magical land where the Light Elves and the Dark Elves live, the four gemstones of the Elven Bow have been stolen by the Dark Elves. Without those gemstones, the barrier between the human world and Celahir is deteriorating and the balance between good and evil in both worlds is tipping toward evil.The first of the gemstones, the Carnelian, was recovered by Aidan, Maggie, Nana, and Beebop with help from their Light Elf friends during their first trip to Celahir. Now, the stakes are even higher when the elves return to the human world to ask for help recovering the second gemstone, the Amethyst, and the humans discover that Mike – Aidan and Maggie's father – has been kidnapped by the evil elf Naesse!The humans, accompanied by Aidan and Maggie's mother, Laura, return to Celahir to rescue Mike and recover the Amethyst. All they have to do is defeat the giant that guards the gemstone…

Aidan, Maggie, Nana, Beebop, and their elven friends have recovered the first two of four gemstones stolen from the Elven Bow. With the second stone - the Amethyst - protected by the Elven Scouts Alatariel and Lotheth and on its way to Keeper for safekeeping, the rest of group heads deeper into Celahir to rescue Aidan and Maggie's father, Mike, from the clutches of the witch Maeva and to recover the third gemstone - the Emerald. After a fateful encounter at Maeva's house, the witch turns everyone, except Aidan and Maggie, into stone statues to decorate her lawn. With the help of Dylan - a ghost boy they met in the village of Fearn - the children have to muster all of the courage and ingenuity they possess to find a way to retrieve the witch's heart from its hiding place and trade it for their family and friend's freedom. If they can do that, then they might be able to find the third gemstone by defeating the cockatrice...

Describes the appearance, formation, physical properties and characteristics, mining, and cutting of precious, semiprecious, and synthetic gemstones.

Includes excerpt from Ruby's Fiery Mishap.