Former teen idol Nam Hyeon-soo is now in his thirties and working as a radio DJ. One day a young woman named Jeong-nam shows up and claims to be his own daughter. She also has a son whom she claims to be Hyeon-soo's grandson. Their relation is proven via DNA tests by Hyeon-soo's brother. This leads to Hyeon-soo attempting to avoid a scandal concerning him having children "unknown" to the media.
When Yoo-mi searches out her mother's friend at a hotel to drop off her younger sister, she falls into unexpected mystery and horror.
Of the high-rolling top 'hot celebrities' of the wealthy upper class in Korea's high society, Kang Hye Na is the one desired by the men, feared and hated by the women. Being the only successor to the largest conglomerate company, Kang San Group, Kang Hye Na has both the looks and the background. She is the owner of the 'Lady Castle' and lives a 'princess-like' life with her servants.
