A festering intelligence is growing underneath Los Angeles, spores infesting the human brain. First, they take root. Then they take over, destroying all they touch, driving their infected hosts to acts of madness and butchery. Rory Long and Trixie Wright are deeply in love, running for their lives across an L.A. County wracked by wildfires, mass violence and waves of the possessed. Is there any way to stop the spreading insanity?