If you have not purchased this piece of DLC I suggest you go and buy it now. It is amazing. So with a virus spreading around Blackwater a zombie outbreak is on the loose. John is handed with the task to go out and find a cure to help his infected wife and son. John heads into the city looking for a doctor and this is where he realises something has gone wrong. The people of the city wonder around aimlessly and to make matters worse ammo is limited.