In this manga, Nike, the resolute princess of the Rain Dukedom, possesses a unique ability to manipulate rainfall. Due to a loss in a game of rock, paper, scissors against her sisters, she is reluctantly betrothed to Livius I, the king of the Sun Kingdom. Known as the formidable 'Dreadful King' for his swift world conquest, Livius surprises Nike by being a young boy. Their initial encounter takes a contentious turn when Livius demands Nike to summon rain, leading to her imprisonment when she refuses. As they navigate their forced marriage, initially only a formality, a gradual emotional connection blossoms between the two.