Jonathan Strange's remarkable magic helps England win the Battle of Waterloo, after which Strange returns home hoping for a peaceful new life, but the Gentleman's scheme for revenge wrecks all of his and Arabella's plans, leaving Jonathan Strange a ruined man.

With England in chaos as magic returns, Strange comes back home to claim Mr Norrell and rescue Arabella. But can his plan possibly work? Or will the dark prophecy of the Raven King finally be fulfilled?