I had mixed feelings on this film. Paula Beer is very good in the lead but without the background information that it is based on a German fairy tale, it makes little sense. Undine (Beer) works as a lecturer at a museum and those scenes are unnecessarily long. She meets up with a boyfriend and tells him not to leave her with nasty threats. A scuba diver enters the picture and a giant catfish is part of th story without any explanation. I was disappointed in the ending and I cannot recommend this movie.