Yun Qing makes a living beneath an overpass, telling fortunes, catching ghosts, and warding off evil. Her mastery of the supernatural arts is extraordinary, but she never expected to be the Su family's real daughter, switched at birth with their heiress.
After returning to the wealthy family, she discovers that her adoptive sister, Su Ling, not only welcomes her, but is also kind and considerate, always standing up for her. Stranger still, Su Ling seems to possess a special ability, and can even unconsciously draw talismans identical to Yun Qing's in moments of danger...
Meanwhile, Li Mochen, the richest man in A City, is afflicted by Nanyang black magic. Su Qing steps in to save him, only to discover that the Li family's ancestral home is suppressing a vengeful spirit that has haunted the place for a century. The truth leads to a mysterious organization called the Dark Moon.
