The pretty Mermaid Princess Marina lives a happy, sunny life in Bountiful Bay with her parents, the Mer King and Queen, and all her fun-loving friends. Until - One Day - the Sea Witch appears upon the scene See how she hatches a cunning plot to kidnap the Mermaid Princess and drive the Mer-folk from their happy home. But will she succeed, or will the Mer-folk foil her wicked plan?