The airship Alexandria prepares to leave her port in Canston. Aboard are Crown Prince Jovin and his rambunctious younger brother, Merik. Accompanied by the Alexandria's captain, Captain Greggory Donald, the two princes set out on Prince Jovin's first multicountry diplomatic mission. But when tragedy strikes the royal family of an allied country, the Alexandria's occupants realize they are in for more than they bargained for. Join the Alexandria's crew in their world of airships and adventure, where invention and creativity flow limitlessly and power is something that is paid for the hard way.