After their far-reaching run-in with a cult of dragon worshipers, Claire, James, and its newest addition Andrew, make their way back from the long-winding tunnels of London's subway system to the surface to take care of some unfinished dangerous business at Piccadilly Circus. Dangerous business, that is. As Claire and Andrew grow closer, much to the discomfort of James, the curious young scientist hatches a plan with the potential to turn the war on dragons in their favor. But is he telling the truth? And what plan does a mysterious cult member have in store for James? , play in all of this?