Princess Rose musters up courage to face the dragon that threatens the small towns in the Northern Valley, only to discover the dragon is actually the Lord of the Locusts; and meanwhile, her sister, Princess Briar, embarks on a more sinister quest.

Life in the valley isn't getting any easier for the Bones and their newfound friends, while back at the farm, Fone Bone and Thorn are troubled by strange dreams.

It's full-fledged war as Briar, the rat creatures, and the Pawan army storm the city of Atheia. The Bone cousins, Thorn, and Gran'ma Ben are all there to defend the Valley and stop the return of the Lord of the Locusts. When Thorn goes inside a ghost circle, she hears a voice urging her to seek the Crown of Horns. What follows is another dangerous journey for Thorn and loyal Fone Bone as they race to the sacred grounds of the dragons, searching for...

After being run out of Boneville, the three Bone cousins-Fone Bone, Phoney Bone, and Smiley Bone are separated and lost in a vast, uncharted desert. One by one, they find their way into a deep, forested valley filled with wonderful and terrifying creatures.

Phoney Bone rigs the Spring Fair's annual Great Cow Race by putting Smiley in a bovine disguise and convincing everyone to bet their livestock on the mystery cow, and Fone Bone finds himself in a one-cousin battle with the rat creatures.

Twelve-year-old Tom Elm, his raccoon friend Roderick, Percival, Abbey, and Barclay Bone, warrior priest Randolf, and forest woman Lorimar join in a quest to find the pieces of the Spark that can save Dreaming--and the Waking World--from a Darkness created by the Nacht.