The game follows the exploits of a new player character, a member of a secondary F.E.A.R. team sent in to investigate Armacham's Perseus Project. The game takes place during the events of the original F.E.A.R. as well as the Extraction Point expansion pack. This second F.E.A.R. team consists of Captain David Raynes, Lt. Steve Chen, and the unnamed F.E.A.R. Sergeant (the player character). After battling through Replica soldiers and ATC security forces, the second F.E.A.R. team discover that a third faction has already infiltrated the ATC facility and killed everyone inside. This faction consists of highly-trained mercenaries known as "Nightcrawlers", who are armed with advanced weapons and also include several elite super-soldiers who possess the same SloMo ability previously demonstrated by the F.E.A.R. Pointman.