The coelacanth, a powerful fish with leg-like fins, was considered by zoologists for a long time as an anatomically interesting, but not particularly exciting fossil. But since 1938, he holds science in suspense: For the presumed extinct primordial fish is alive! But to ferret him out in the dark ocean is a matter only for truly obsessed "Hunters of Primordial Fish". The film follows Hans Fricke and his team who are searching for the coelacanth with special dive boats in Africa and Indonesia.