The little mermaid rescues a prince from drowning and falls in love with him. To be with him, she makes a deal with the evil sorceress: her beautiful voice against a life on land. It seems to work at first, the prince is enchanted with her lovely appearance. But the memory of a foreign princess still haunts him: The one who found him on the beach where the mermaid had left him, and whom he (of course) believes to be his saviour. To resolve this mistake is too much for the mute little mermaid, and not even her father, king of all seas, can help her in the impending catastrophe.
Miroslava Šafránková
as The Little Mermaid
Radovan Lukavský
as King of All Seas
Petr Svojtka
as Prince of the Southern Empire
Marie Rosůlková
as Grandmother
Milena Dvorská
as Witch
Libuše Šafránková
as Princess from the Neighboring Empire
Jiří Ornest
as Prince's Aide
Dagmar Patrasová
as Little Mermaid's First Sister
Jiřina Krejčíková
as Queen of the Blue Sea
Alexej Okuněv
as King of the Ice Sea
Jaroslava Schallerová
as Queen of the Ice Sea
Milan Hein
as King of the Yellow Sea
