You can now watch the entire King Neptune movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.
After a short introduction, one of Neptune's mermaids is captured by a pirate ship, and their anchor chain entangles ; the various sea creatures launch a full-on assault on the pirate ship, and eventually the giant King himself gets free and creates major havoc for the ship.