Pristina Polar Bear embarks on a harrowing search for her missing Bestie, Glacier, which leads her to Snowy Valley. There, a freak hot cocoa factory accident threatens to destroy the endangered Key Glacier and Snowy Valley. In an effort to save the glacier, Pristina and her friends venture deep into the glacier's interior where they discover ancient magical secrets about the origins of Everwilde, Besties, and much, much more!