Mad Mo and the crew of The Siren are the most fearsome pirates to ever fly the skies over the Barbary Coast. Only those closest to her know that everything she does--the raiding, the looting, the illegal magicking--are all for a greater cause--to find her baby sister. After five long years of searching, Mad hits a stroke of luck: she comes across the same airship that abducted her sister. But before she can launch an attack, The Siren is overtaken, and Mad wakes up bound to a chair aboard the enemy ship, her greatest weapon--her magic--rendered useless. Her captor is not what or who she expected; he's far worse. And Mad must strike a deal with the devil himself to get the answers she needs to save her sister. A steampunk fantasy adventure!