Three-year-old toddler Sui Sui has grown up in Ghost Valley since childhood, proficient in medical skills and possessing supernatural abilities. Obeying Gui Popo's instructions, she goes down the mountain to search for her relatives, accidentally encounters Lu Xiao in the capital city, and is brought back to the Lu family. She unexpectedly confirms that the Prince of Yan, Xiao Yanci—who has injured legs and a cold disposition—is her biological father. Sui Sui's appearance not only helps Xiao Yanci stand up again but also heals his long-closed inner heart. The father and daughter gradually build a deep bond, join hands to fight against villains, resolve crises, and search for the truth about the disappearance of Sui Sui's mother.