Frost Berry

After a mutation in the human gene caused 98% of all mankind to be turned into unrecognizable and even more intelligent creatures, the remaining 2% will be forced to hide in oppression from their superior counterparts. However, after nearly an entire century of oppression and fear, mankind makes the first step toward reclaiming what was once theirs. These genetically modified 'superior' humans have no weaknesses besides low temperatures.
Every year, a winter of massive proportions blitzes over the face of the earth, casting a white veil over mother nature for forty-three days. With mankind's only weakness buried under heaps of snow, mankind finally has a chance to fight back. Through a group of specially curated fighters named the 'Frost Berries', they harness the power of technology that would even rival the smartest of civilizations and use this forty-three-day window to slowly but surely reclaim their rightful Earth.