Crossing the Border is not only a detective drama, but also a supernatural drama starring Wang Xi and Linda Chung. Different from TVB's previous detective dramas, the "detective" in Crossing the Border is not a police detective, but a private detective. The cases investigated by private detectives in this drama are not ordinary investigations and tracking, but some surreal bizarre events. There are joys and sorrows, treachery, perseverance, spying on the ugliness and goodness of human nature, which brings enlightenment and reflection to the audience.