The mokélé-mbembé is said to live somewhere in the African rainforests. And so, over the years, Michel Ballot, a French zoologist, has explored the thick jungle and muddy rivers of South-West Cameroon with the aim of finally establishing its existence. In that process, he encounters pygmies who claim to have seen the mythical creature at a nearby river. They describe it as a giant rhinoceros with the rump of a crocodile and the head of a snake.

Marie Voignier accompanied Michel Ballot on his tireless pursuit into a dimension where probability and legend co-mingle. As triggered by the concerns of a »white« scientist, the film becomes an essayist expedition into the mythological world of the natives. The encounters between the occidental, empirically motivated researcher on the one hand and the pygmies on the other challenge the viewers to pose vital questions about faith and truth. Does the mokélé-mbembé really exist and is the question in any way relevant?