Due to the drought, Sayo was sacrificed to the water god to bring rain. But when she opens her eyes, she was in the inner court of Suijin-sama, the water god. Around her were animals...a bear, a fox, a wolf, and more. And they all speak human languages. Then she realizes that she was holding a white-and-black animal. A penguin! Sayo had no idea how she came to the inner court, but she was accepted by Yatagarasu, retainer of Suijin-sama. She starts her life in Winter Palace, very different from her days in the rural village, and enjoys it. Still, there are mysteries not solved. Who brought Sayo here? Where is Suijin-sama? Who is this penguin, with no memory at all?