After sacrificing her voice to save Prince Leon, mermaid princess Sera is betrayed by a witch who steals her credit. Blinded by lies, Leon brands Sera a liar and even prepares to execute their own mermaid daughter to save his fake savior. Driven to despair, Sera awakens her ocean powers, exposes the truth, and slays the witch. She retreats to the deep sea with her child, leaving the devastated King to rot in eternal regret.
