A lowly human Hunter and an evil arch-mage blow up each other, every significant supernatural leader in England, and about four blocks' worth of buildings in the middle of London in a huge, public, obviously magical explosion. One lone Promethean, bleeding and dying, makes it out of the blast, and stumbles his way along to Alexander's, the area's busiest supernatural hangout spot, desperate to find somebody who can help him cover up the damage before the reality of magic becomes irreversibly public.
Desperate for your help.
The media is circling. The supernatural world, devoid of its leaders, is bubbling over with conflict and confusion. The hunters are gathering to avenge their dead comrade, and the cops and the government are looking for somebody to blame...