Urban legend, somehow evident, somehow verisimilar, threads together the past and future. Conducting research at Bride's Pool, Professor of folkloristics POON DOR-LAI (Lam Ha Mei) has what appears to be paranormal encounters, but soon uncovers criminal exploits behind it. She teams up with journalist FU CHI-POK (Edwin Siu) to probe into the matter, unravelling the unknown background of bride-to-be WONG YUK (Topaz) (Moon Lau). DOR-LAI's teacher has disappeared for seven years, and it turns out that CHI-POK is his son. The two decide to continue his unfinished paper "Hong Kong Urban Legend". In the process, they discover many cases that bear coincidental similarity to legend, realizing his disappearance is very suspicious. During the investigation, DOR-LAI and CHI-POK get to know police officer YIK MING-YIN (Cheung Wing Hong), whose family turn out to be the protagonist in the story "Fox Demon killing infants". With DOR-LAI being asked to investigate what happened years ago, a clue instead leads her to the pawnshop run by her mother. In the meantime, CHI-POK finds out his father is still alive.
