Four days after the first reported case of "green flu" or the zombie virus, four friends, Max, Joey, Peter and Terrance are hiding out at Joey's house eating dinner and listening to the radio around the fireplace while discussing their next move. Terrance suggests that they try to hold out at Joey's house as long as possible, but Max suggests that they head for a "safe house" in the nearby park to restock on supplies. With the fire going out, Joey instructs Peter to go outside and get more wood. The three guys left inside talk about what they miss most about society. Meanwhile, in the side yard, Peter is confronted by a zombie. Back inside, Terrance asks why the lights have to say out, and Joey tells him that the infected are sensitive to light and sound. Just then, Peter shoots the zombie in the side yard. The shot is heard inside the house and the three inside freeze. Peter comes running in, shouting that there was a zombie outside. The yells of the infected are then heard echoing outside. Terrance yells at Peter, telling him that now the zombies know where they are. Knowing that things can't possibly get worse, Joey turns on the lights, and tells everyone to start packing.
The Four then go to the door. Peter asks what the plan is, and Max suggests that since there is no way they can stay at Joey's, they should head to the park. Joey decides that they should turn on the lights and draw all the zombies towards them, to make things easier. The four then fight off a horde of zombies in Joey's front yard and head towards the street. The four finish off the last of them while in the street, and take a short breather. Suddenly, as hunter jumps onto Max and starts to attack him. Peter shoves the hunter off, shoots him and then helps Max up. Joey proceeds to state the obvious about the zombies starting to change. A smoker then grabs Terrance by the ankle and drags him away from the group. The three rush towards Terrance, and fight off a fresh wave of zombies. A jockey jumps onto Joey, but is shot off by Max. A charger rushes towards the group, but misses all of them. The three continue to follow Terrance's screams, and reach him as he is getting attacked by the smoker. The smoker is killed by Joey. Terrance is terribly injured, and has to be carried by Peter. The four then continue to the park, fighting off the zombies.