In the boundless frozen kingdom in the far north, the Sky Tower penetrates the starry sky like blue icicles. It is said that the top of the tower hides the mystery of awakening the eternal winter. Yun Yan, a wandering poet in the snowy plains, lost his home due to a strange snow disaster, and the fire of pursuing the truth about the Tianta was ignited in his heart. As he embarks on a trial, he needs to cross the cold dreams, talk to lonely creatures, and distinguish between illusion and reality in the snow. As the kingdom gradually falls into the deep sleep of the polar night, Yun Yan's poems become a light against the cold, and the subtle alliance between him and the frost elves will also determine the fate of the kingdom. The story uses ice and snow as the language to explore the boundaries between loneliness and hope, illusion and belief. At the height of the Eternal Tower, can Yun Yan awaken the sleeping world with poetry?