"Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process"--

An unlucky twelve-year-old Norwegian boy named Odd leads the Norse gods Loki, Thor, and Odin in an attempt to outwit evil Frost Giants who have taken over Asgard.

Big Hasuni is scared off, after he accidentally destroys a campsite while investigating the plume of smoke rising above an island; only to find a disaster waiting for him at his mountain camp upon his return.

The Dragon Masters are still reeling from the desertion of Rori and her fire dragon Vulcan, when Mina, a Dragon Master from the far north, arrives with a problem--King Lars needs a fire dragon to defeat the Ice Giant who has frozen his kingdom; and so the Dragon Masters set out to find Rori and convince her to help.

In The Son of Neptune, Percy, Hazel, and Frank met in Camp Jupiter, the Roman equivalent of Camp Halfblood, and traveled to the land beyond the gods to complete a dangerous quest. The third book in the Heroes of Olympus series will unite them with Jason, Piper, and Leo. But they number only six--who will complete the Prophecy of Seven? The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother,...

Mischief-makers Prince Lucas, his best friend Clara, and Ruskin the scarlet dragon learn to respect the hard work of others when they are sent to Flatfrost to fetch more ice from the giants who live there.

Cooperatively writing a fairy tale for school, a girl imagines a beautiful princess whose beloved ponies are being stolen by a giant, and a boy conjures up the muscular biker who will guard the last pony in exchange for gold.

"The magical world teeters on the brink of collapse. The Dragon King, Celebrant, has united the dragons into a vengeful army, and only a final artifact stands in the way of them unleashing their fury against humankind. With established allegiances shifting under the strain, Seth and Kendra find themselves in desperate need of new allies. Seth must face his most dangerous quest-the fulfillment of his pledge to the Singing Sisters. With only Calvin...

Relates the tale of Jack who, after trading his mother's milk cow for magic beans, climbs a beanstalk to seek his missing father in the land of giants.

When two best friends, a giant and an elf, grow Christmastown's holiday tree, disaster strikes.