Set in the frozen world of a post-apocalyptic 2144, Sumi, a young warrior girl raised by a mama polar bear, narrowly escapes capture from the brutal Morad hunting party and sets out across the vast winter landscape. When Sumi stumbles across the mysterious Frozen Girl, an unlikely friendship is forged and together they race ahead of the brutal rival tribe towards the only guiding light Sumi knows, the Polaris star.