It's November of 2020, and the world is freezing over. Each day colder than the last. There's snow in Israel, the Thames is overflowing, and an iceberg separated from the Fjords in Norway is expected to drift just off the coast of Scotland. As ice water melts into the Atlantic, frenzied London residents evacuate by the thousands for warmer temperatures down south. But not Dylan. Grieving and ready to build life anew, he heads north to bury his mother's and grandmother's ashes on the Scottish islands where they once lived. Hundreds of miles away, twelve-year-old Estella and her survivalist mother, Constance, scrape by in the snowy, mountainous Highlands, preparing for a record-breaking winter. Living out of a caravan, they spend their days digging through landfills, searching for anything with restorative and trading value. When Dylan arrives in their caravan park in the middle of the night, life changes course for Estella and Constance. Though the weather worsens, his presence brings a new light to daily life, and when the ultimate disaster finally strikes, they'll all be ready.