"When Maddie and Will get a message that dire wolves--huge misshapen changelings, much larger than regular wolves--have been marauding and attacking through the hills and valleys of Celtica, the Rangers are sent on a mission to unravel just who or what is behind these dangerous creatures. Will isn't anxious to return to Celtica, especially approaching the Rift. And as they travel, Maddie must grapple with their growing dealings with the spiritual...

Introduces the part-dinosaur, part-truck monsters called Dinotrux, including Dozeratops, Digasaurus, Velocitractor, and Tyrannosaurus Trux.

"Aran has never truly fit in with his selkie clan. He was born in his human form, without a pelt to transform him into a sleek, strong seal. Each day he waits, left behind while his selkie family explores the deep ocean. What if his pelt never comes?"--