Synopsis：One night, Wu Shuang, chairwoman of the Wuxian Group, had just climbed out of her home swimming pool and hadn't even had time to grab a towel when she was suddenly attacked by several masked assailants. It happened as the Wu family was heading to a charity gala, leaving the house empty. The criminals ransacked the property, stealing valuables, and then abducted Wu Shuang. The kidnappers spoke both Mandarin and various regional dialects. Using the cover of night, they evaded the Hong Kong police and escaped to Shenzhen. The sinister and ruthless leader of the kidnappers, Huan Ge, subjected Wu Shuang to various forms of torture. Her younger sister, Wu Xue, worried about her safety, persuaded their grandfather, Wu Shouchen, not to call the police. She even volunteered to deliver the ransom in person and offered to exchange herself for her sister, deeply moving the entire Wu family. However, beneath this seemingly deep sisterly bond lay a secret unknown to all...