Melody, a young girl, discovers a magical locket that reveals the underwater kingdom of Atlantica and becomes determined to uncover its secrets. Unbeknownst to her mother, Ariel, Melody runs away from home, prompting Ariel to transform back into a mermaid to search for her missing daughter. Meanwhile, Ursula's sister Morgana seeks to dominate the ocean, and Ariel and her friends must thwart her plans and rescue Melody from her clutches.

The Little Mermaid II: Return to the Sea
Ariel's 12-year-old daughter embarks on a thrilling underwater adventure, defying the warnings of a powerful sea witch to forge her own path.