A young mermaid makes a deal with a sea witch to trade her beautiful voice for human legs so she can discover the world above water and impress a prince.A young mermaid makes a deal with a sea witch to trade her beautiful voice for human legs so she can discover the world above water and impress a prince.A young mermaid makes a deal with a sea witch to trade her beautiful voice for human legs so she can discover the world above water and impress a prince.