This sensational documentary covers the subject from ancient seafaring myths and legends that related stories of the "Dragons of the Canary Islands" as early as 2,000 years ago, up to the current state of research on these unique reptiles. Spectacular shots also illustrate the trying journeys undertaken by Oskar Simony at the end of the 19th century. The first giant lizard specimen captured by Oskar Simony in 1889 for the scientific world is still at the Vienna Museum of Natural History. But Mündl's film also demonstrates that animal species do not always benefit from being discovered: Only a few decades after Simony's sensational discovery the giant lizard of El Hierro was considered lost or extinct. Too many scientists and collectors had helped themselves to material from the small population.