The Heterodyne Boys and the Turbines of Atlantis

A story in the Heterodyne canon, apparently beginning with the Heterodyne Boys setting out across the Atlantic Ocean to shut down the "mad perfumeries of Haiti" and ending up with them foiling the plans of the Spark Emperor of the Deepest Trench. Corkscrew towers are involved.

That is, if they aren't interrupted by a ravishingly beautiful yet mysterious Spark princess with color-changing eyes and a mystic amulet first.