Force of Nature (3.5e)
Earthquakes¸ tidal waves¸ and volcanic eruptions have suddenly wracked Porthaven¸ a city normally known for its mild weather and calm seas. The root of the problem is an arcane machine built to protect the city 300 years ago by extraplanar creatures called modrons. Now the machine has run out of fuel¸ and it's up to the PCs to obtain more by visiting each of the four elemental planes. Can they get the machine working again before the city of Porthaven is wiped from the earth?