The weather station is the center of the world. Five hundred years ago, ten major families sealed the power of weather into machines to jointly maintain order in the world. But the order gradually turned into a monopoly, and the Yun family swallowed up Shuang, Dew, Wind, and Thunder, covering the sky with one hand.
On the day the Shuang family was destroyed, 21-year-old Yun Shuying discovered 18-year-old Yuanhua in the snowy woods. She is the last bloodline of the Shuang family and has the ability to control all weather machines. Yun Shuying sealed her memory and took her away as her sister.
They lived together in a small building on a narrow street. Yun Shuying works in the code-breaking room of the weather station during the day and brings home roasted chestnuts in the evening. As Yuanhua waited for her to come back, the days were as quiet as snow falling into hot water in winter - silent, but making people feel hot.
That summer, Yuanhua entered the University of Meteorology. During class, frost flowers formed in her hands, and rainbow light flowed on her fingertips. She began to realize that there were too many things hidden in her that her sister had not told her. Fragments of memory are emerging one by one.
And Yun Shuying still sits in the code deciphering room every day. The table across from her had been empty for five years. Tucked deep in the back of her desk drawer was an old, yellowed photo of two young girls—herself and a young woman with dark hair.
That girl also called Yuanhua "sister".
That girl died on the day the Shuang family was destroyed.
But the three of them all believe that the world "will be sunny".
