The premise behind a myth whose roots go back to classical Greece and which inspired Hans Christian Andersen’s The Little Mermaid is clearly sketched in an efficient script that falters a little only in its over-hasty supernatural denouement.
Via interpretations of the myth by E.T.A. Hoffmann, Tchaikovsky (and other canonical composers), Hans Christian Andersen, Arthur Rackham, and Jean Giraudoux, its diluted onscreen children include Splash (1984), Disney’s The Little Mermaid (1989), and Neil Jordan’s Ondine (2009).
In Undine, Petzold turns to the titular mythological character — think a water nymph or Hans Christian Andersen’s The Little Mermaid more than Disney’s version — who becomes human when she falls in love but is doomed to die if he is unfaithful to her.