The zombie outbreak started 20 years ago and you have somehow survived it and you shall try to keep that up for as long as you can try to find survivors(your friends) while trying not to be loud because the zombies can here you talk ingame and they can hear the gunshots you fire and more try not to get infected try to stay healthy eat well drink water and stay at a normal tempture try not to get any diseases try to survive the weatherand more the zombie are clearly not your only problem