Kim Joohyun and Kang Seulgi had been best friends since they were little, but their life is completely different from each other. Kim Joohyun is the princess of the Kim Empire and is the only child of the Kim Empire's Empress, Kim Taeyeon. Kang Seulgi is the daughter of the Empress' Head of Maid, Kang Seohyun. The story of their epic adventure, loyalty and tight friendship will be unraveled throughout the story. Kim Joohyun as Princess of the Kim Empire and Empress Kim's only child