Terror From the Skies!

Publisher's blurb: It's anything but smooth sailing when a powerful storm strands an Atlantean diplomat on the surface world. With negotiations breaking down and a missing princess, it's up to our heroes to find the source of this mysterious maelstrom and stop the Terror From the Skies! This is a Freedom City-based adventure for a team of 4-6 heroes of PL 10, with an emphasis on high-flying action, tense diplomacy, and escalating environmental hazards.