They’ve only just returned, now they’re in danger . . . Join an epic race to save the rare white mammoth that might just save the world. ​ The arctic is all Ash Grimes has ever known. Born and raised at a research facility responsible for cloning and releasing mammoths, Ash is desperate to prove she has what it takes to be a Mammoth Rider. When a billionaire trophy hunter threatens the safety of the Mega Herd, Ash, along with best friends Jack and Ruby, must face a race across the tundra to save the compound, her dad and the rarest creature on the planet – a white mammoth calf. ​