To the general public, the Global Security Alliance or GSA is an international law enforcement entity that operates under the direct oversight of the United Nations. However, the nature of their work is far more peculiar. Soul larceny, inter-dimensional contraband, and supernatural murders are just a few of the cases that GSA investigates in an effort to keep the mundane world separated from the world of magic and monsters that exists behind the scenes. GSA Special Agent Tony Cross's evening started with an unusual knife and ended with a murder committed by Ayiana, a possessed young psychic with ties to the agency. The convoluted plot thickens when the victim turns out to be a retired agent, and evidence leads to an Archdemon's involvement. Cross and his team work to protect Ayiana from the true mastermind while investigating the death of their fallen comrade.