being knocked down and vulnerable. Multiple zombies may also pile on top of both players in an attempt to stomp on them (or kick them while they're down). There are also a number of secrets in the game. Different hidden treasures, such as coins and golden shapes, which increase the player's score, as well as "lives", etc. can be found by interacting with the game's environments. The bonus-life system departs from the previous games, where life is gained by saving hostages; the loss of these events are substituted with an increase of extra-life pickups in the environment. There are also "treasure rooms" that can be accessed using different techniques (such as shooting a certain spot or throwing a grenade in a certain area), which contain multiple items that can be obtained at once within a limited time. Plot In 2003, three years after the Caleb Goldman Case, veteran American AMS agent James Taylor, and a new rookie agent, Kate Green, are gathering intelligence at the fifth basement floor of the European headquarters of the AMS in Italy (イギリス London in the Japanese dub). James has a sharp memory of the Caleb Goldman Case, and believes that the ordeal hasn't yet ended. A sudden earthquake rocks the room while they talk, collapsing the basement walls and leaving the agents trapped. Several days later, as the two await a rescue team, James' PDA goes off, and a group of undead are seen on the security cameras. Realizing that they are in danger, James has Kate gather all the weaponry they can find to defend themselves. Soon after, the two travel through the sewers to an information room where they uncover a plot to fire nuclear missiles worldwide within 24 hours' time, facing the four-armed giant zombie Justice and a pair of mutant tarantulas known as The Lovers along the way. Taking the subway into zombie-infested streets from an underground shopping district, the agents narrowly avoid attacks by The Empress, a double-ended chainsaw-wielding assassin, and the massive, obese, and nearly impervious Temperance. James and Kate then learn that the late one-time CEO of the now-defunct DBR Corporation, Caleb Goldman, is responsible for the resurgence of undead. All of his messages and current plans were set in motion even before his death. Upon reaching the surface, they find the city completely obliterated. Goldman sends them a PDA message indicating that the launch will occur