The outer crust is under attack by the subterranean Styx who are turning ordinary humans into walking bombs and incubators for their eggs, and only Will Burrows and his band of retired commandos stand in their way--but the Styx also have problems of their own.

Sixteen-year-old Lily is a skilled computer hacker looking for the man who faked a passport for her mother when she is attacked by a two-headed dog and rescued by the Eldritche Regan who plunges her to a London she never knew existed--a world of magic and supernatural creatures that is beginning to invade the human world.