Mr. Fish, who lives on a dilapidated shipwreck, one day discovers Pip, a hyperactive young sea dragon, who mistakes his home for a junkyard and steals his things. The ensuing argument leaves both their homes in ruins. But there is hope. They embark on a seemingly impossible quest to find the mythical "Twinkle" who will grant their wishes, but there's one problem: someone else is also on the hunt.