When society has crumbled, chaos surrounds you and a monster altering diseases has become rampant, it is a to necessity to know who to trust and who will lend you to your death. It is literally a cut throat world where every single decision is made is either a do or die situation. And most times you have to play the bad guy, for the greater good for yourself because simple human acts such as helping, sharing and just being nice to others that are not part of your group is a danger, for you never know their true intentions or if they are infected. So it best to keep a low profile to avoid risk from zombies and our fellow humans. But also stay in high alert, if you do decide to help others in need, because every decision has an effect, the question is will it benefit you in the long run or lead you to your grave.