After painstaking research on the Demon Refining Elixir, an unexpected mishap leads to the absorption of the elixir's power, causing a chaotic surge of magic and resulting in memory loss. He Ansheng, a kind and honest healer from the Wuyou Village, comes to the rescue. As He Ansheng and the mysterious orphan girl Xiao Bai (Su Su) embark on a journey to uncover their identities and memories, their love gradually blossoms. However, within Xiao Bai's (Su Su's) body, the Demon Refining Elixir teeters on the brink of losing control. Will Su Su's identity as a member of the demon tribe be revealed? As humans and demons follow separate paths, what fate awaits the love between Xiao Bai and Ansheng? Can the centuries-old divide between humans and demons ever be bridged?
A bizarre case from ten years ago involves the Chong Ming Wei, an organization known as China's X-Men. Three young heroes who are either compelled by ideals, identity or curiosity become embroiled in the mystery. Legend has it that that the 'thirteenth guard' is in charge of the capture of a violent and bloodthirsty supernatural being. Xu He Qiao is a great Ming Dynasty detective. Duan Rong is the cute at times and serious at times martial arts heroine. Duan Jin is a coroner who indulges in his life's work. For their own reasons, they must face off against the series of supernatural occurrences that take place amidst a huge conspiracy.