What's at the end of a rainbow? To many in the world of Oceanagua, it's where the near-mythical Leprechauns, a super-powerful race of elves, hide their gold, which is the source of their awesome power. Many seek this gold for one reason or another, but none have ever found a Leprechaun's stash. But this doesn't dishearten the crew of the Lucky Lash, the only pirate ship, or any ship for that matter, with Leper Kaun as it's Captain.