Kina and Yuk, a couple of polar foxes ready to start their family, live peacefully on the ice floes of Canada's Great North. The temperature is abnormally mild and food increasingly scarce, forcing Yuk to venture further and further to meet their needs. When suddenly, a terrible cracking caused by the melting ice will disrupt this majestic nature and separate our foxes, each isolated on one end of the ice floe. They will have to brave all dangers and explore new territories in the hope of being reunited in time for the birth of their young.