The plot is quite simple for those who played the game.
It all goes around a group of citizens who are hiding inside a bar at the south zone of Racoon City, it was when they were about to lose all hope that a radio notice called their attention "A safe zone at the north exit of the city". So this group decides to take this risky chance and try to make their way through the streets infested with zombies.
So our characters are part of that little group, a group where none knew each other before the apocalypse, however, who knows what can happen between the characters