After surviving for 20 days and nights, you and your fellow survivors were evacuated by the military via helicopter. But mid-flight, one of your group is found to be infected, and he turns quickly, causing the helicopter to crash - you are the only one that was left alive.
A month later, living on your own, you catch a radio broadcast that announces there will be an evacuation plan out east at Union City; that in 40 days the last of the refugee boats and aircraft will leave before the mainland is sealed off forever.
You must reach Union City before this happens, but the path will be wrought with danger; you must gather weapons, other survivors, and supplies, and journey east through infested towns and cities, scavenging during the day, and defending your various encampments at night.
Will you make it in time? Or will this nightmarish landscape become your permanent home?
During the course of the game, you travel to many different locations, listed here, in order of arrival in-game: