Once a year, weather weavers from all over the globe come together at the Gathering, to trade weather magic and stories. Stella and Nimbus can't wait to meet other weather weavers, but they're in for a frosty welcome. Tamar has always been a rule-breaker. This time, she's broken the law, but it's Stella who'll lose everything if the trial goes badly. Can Stella and Nimbus thaw the hearts of the council elders, or will winter tear them apart?