It is September 29, 1998, and Raccoon City has been overrun by the undead. A biological weapon known as the T-Virus has leaked into the sewers, where rats carried it out to infect the city's population. Two newcomers arrive amid the chaos: Leon S. Kennedy, a rookie police officer reporting for his very first day on the job, and Claire Redfield, a college student searching for her missing brother. Almost at once, the two find themselves battling for their lives against hordes of monstrous creatures as they struggle to survive.