Professor Hagen (Claude Peiffer) wants to investigate this question together with his assistants Victor (Claude Hansen), Dan (Daniel Paulus), and Lena (Tania Mangen) and their paranormal research. One day, an anonymous tip leads them to a mysterious, previously unknown videotape that may provide revolutionary proof of the existence of ghosts. To find out if the tape is real, the four decide to embark on an expedition, enlisting the help of a dubious ghost hunter, Mr. Montana (Pierre Heinen). But who is this mysterious Montana, and what does he really want?