War is being waged against the Descendants and Saira Elian is desperate to stop the Mongers' savage bid for power ...

Saira's search for kidnapped mixed-bloods draws her into the Mongers' stronghold, revealing the horrible truth behind the irresistible Monger ring and the vile plan to cleanse Family bloodlines ... permanently.

Under threat of a brutal massacre, Saira and Ringo travel back to Bletchley Park during World War II where they team up with Archer from the past to crack a Nazi code and expose a Monger intent on changing the course of history. They...