Cold Thistle was left behind. Louise and her friends moved into a luxurious new London residence. But ominous warnings again haunt them. A war is coming between the old gods and otherworldly monsters. Religious fanatics from the shepherd's followers gather in the city. And the spirit of Louise's father continues to try to take over her consciousness. To stop this, the girl agrees to make another terrible deal with Mr. Morningside. Louise and friends will have to go to the gate between worlds, a place from a dark legend - the Tomb of the Ancients. There a choice awaits her, terrible and inevitable. Everything depends on whose side Louise takes in this war - her future and the life of the whole world.