Inside the bodies of Wyverns is a stone-like substance that when burned provides anti-gravity powers. This substance is vital to the survival of the floating city of Rothas, one of the last surviving major cities after war had decimated the ground below.   To acquire this substance, Rothas uses a series of top of the line pilots known as the Thorns of The Sky to hunt down and slaughter Wyverns.   One of these pilots, Tobias Brewer, has done this for years and is considered one of the best in the buisness.  However when a routine hunting mission goes horribly wrong and strand Tobias and co on the surface,  the pilots must find a way back to Rothas before the worse happens and Rothas falls.