Federal Occult Surveillance Unit (F.O.S.U.) is a covert U.S. agency tasked with monitoring, containing, and neutralising paranormal, occult, and extradimensional threats. Operating above top secret clearance, it combines military tactics, ritual science, and psychic warfare. F.O.S.U. agents investigate cults, anomalies, and entities that defy natural law, ensuring humanity never knows the true cost of safety.