Lake Ohrid, the oldest lake in Europe, is a unique treasure trove of nature. No other body of water on our continent is home to so many species in such a small area. Among them are iconic species such as the Ohrid trout, a living fossil. It arouses the interest of scientists, fishermen and artists alike. Archaeologists researching Lake Ohrid as an important site in European settlement history are also keeping an eye on it. With breathtaking images above and below the water, the film tells of the beauty of this Balkan jewel and its secrets.