Sui Sui grew up in Ghost Valley. To find her biological parents, she descends the mountain alone with the blood jade her mother left behind. Through a twist of fate, she arrives at the Ninth Prince's residence and unexpectedly recognizes Xiao Yanci, the Ninth Prince, whose legs are injured and whose temperament is cold and stern, as her biological father. Sui Sui's arrival not only helps Xiao Yanci stand on his feet again but also gradually melts the heart he has kept frozen for years. As father and daughter spend time together, they develop a deep bond and become embroiled in an old conspiracy involving the marquis's residence. Amid the dangers, they investigate the Lu family's past and seek the truth behind the disappearance of Sui Sui's mother, Lu Yanran.