Imagine a bird being kidnapped and turned into a fish! This is what happens to our poor little sparrow. His friends plan to find him, and Miranda the mermaid goes out into the Atlantic Ocean on her quest. She finds an underwater town being built from plastic waste by enslaved creatures, ruled by an evil dictator. Captured on camera by a marine student, Miranda is the subject of greed, exploitation and love as she searches for the sparrow. Sea dwellers and other creatures sacrifice themselves in the desperate struggle to find and free Miranda and the sparrow. Will perseverance, true friendship and love be enough to conquer this evil spreading through land and sea?