Skeptical of the existence of ghosts, Ruo-Nan teams up with her boyfriend and friends to bust the rumors by making films in locations haunted by ghosts. Six years ago, they boldly broke into the forbidden area of a cult ritual and angered the sleeping evil spirits, incantation thus spreading into the world. The boyfriend died suddenly on the spot, and the other members went crazy and died unexpectedly one after another. The only survivor was Ruo-Nan, who did not enter the forbidden area due to a foot injury.

However, six years later, Ruo-Nan's daughter suddenly can draw the symbol used in the ceremony of that year. Not only does she often speak to the invisible, but she also develops strange skin diseases, and her teeth are deformed, blackened, and dropped. Ruo-Nan thinks all of these are caused by evil spirits from the past! To save her daughter's life, Ruo-Nan decides to risk her life to return to the forbidden area and find out the secret of the incantation.