Nike, the fourth princess of the Rain Dukedom and one who holds the power to call forth the rain, travels to the Sun Kingdom to marry Sun King Livius for her country, despite her own reluctance. She soon discovers that the King, who conquered the world in only three years after his ascendance to the throne, is still a child. Furthermore, for trivial reasons, he has demanded that Nike call forth the rain, and when she refuses, he has her thrown in jail. The story follows the two who, while at first are a married couple only in name, gradually begin to establish an emotional bond with one another.