Winter is the most daring of the seasonal Sparkle Sisters. She loves to play with her sisters, Autumn, Spring, and Summer, but her very best friend is her pet polar bear, Flurry. He's the perfect companion for sledding, ice skating, and all kinds of wild escapades. When Winter and Flurry decide to build the biggest snow fort of all time, they're surprised by a baby arctic fox. Winter loves him immediately . . . which makes Flurry very jealous...