On September 28, 1998, 24 hours before the events of Resident Evil 2, former Special Tactics And Rescue Service (S.T.A.R.S.) member Jill Valentine attempts to escape from Raccoon City. Most of the population has been transformed into zombies by an outbreak of the T-virus, a new type of biological weapon secretly developed by the pharmaceutical company Umbrella. The storyline expands upon the settings and events of the T-virus outbreak in Raccoon City and concludes with the fate of the city and its infected population.