The campaign follows the rise to heroism of a group of adventurers who become known as The Stormchasers. They meet as travellers on an airship voyage across Aerois: a planet left splintered by the effects of an interplanar invasion by the powerful Magitek-weilding Emperor Starbane and the war-ending sacrifice of the goddess Siaska five hundred years ago. Siaska's final creation of The Cradle, an aurora-like protective barrier around the planet, was successfully able to seal Aerois safely off from the rest of the planes. However, not all has been forgotten. When their airship is attacked by mysterious figures remeniscent of Starbane's old forces, the adventurers must band together to continue to survive.