Mr. Fish, residing in a dilapidated shipwreck, encounters an energetic young sea dragon named Pip, who has mistakenly raided his home, believing it to be a junkyard. Their ensuing argument causes chaos, leaving both their homes in shambles. However, a glimmer of hope emerges! They set off on a daunting journey to find the legendary 'Shimmer,' which can grant them a wish. But there's a catch: they aren't the only ones seeking it...