After hearing a mysterious sea-shanty from his buccaneer associates, the Gremlin has managed to rope the Demon into a ludicrous, and potentially lucrative, hunt for ancient pirate treasure... and ancient pirate hats. Meanwhile, the Scientist has bigger problems to deal with. His old flame, Nick the Archaeologist, has come for a short stay in the Hotel, and requires some scientific assistance. However, when he asks Brian for help over the Scientist, old problems and ancient artefacts begin to resurface.