In the early 90s, while scouting locations in Iceland for a science fiction film, Jean Michel Roux discovered that many Icelanders believed in the existence of elves. Intrigued by the sincerity of the people interviewed and enchanted by the mysterious beauty of Icelandic landscapes, Roux pursued his investigation.

Investigation Into The Invisible World is a feature-length documentary about the mediums and the relationship between humans and invisible beings such as elves, ghosts, angels, water-monsters and extra-terrestrials. This investigation is also a journey to the frontiers of life. Are we alone in the universe?