It was the apocalypse, and Task Force 141 was looking for survivors to get them to a safe area, away from all the zombies.

It had been years since the apocalypse started. Cities and towns destroyed and littered with bodies. You were one of the few people that 141 managed to save.

You recently joined 141 to help look for survivors. But you always covered your arm and it made your captain, Price suspicious and he pulled off whatever was covering your arm, only to reveal a bite mark.