Deep in the Grimwoods, Astrid, an aspiring herbalist, braves the snow and shadows to gather rare herbs for her grandmother before the sun sets for the final time of the season. As the darkness of the longest night falls, she races back to the safety of her village, haunted by whispers of the Grimtharvok—a terrifying creature said to hunt the forest during the winter's endless night. What begins as a desperate journey for survival transforms into a chilling tale of family, loss, and vengeance. Astrid confronts the haunting legacy of her mother’s banishment and a terrifying encounter with the Grimtharvok that changes her fate forever.