You start in a house. There you can get some weapons. In the house will be also a garage with a car. You will use the car to go to the shop. That might sound easy and boring, but there will be others on the road and they will try to go to the shop as well.
In the shop you have to buy as many things as you can. But the Black Friday sale applies only to the first 30 customers.
You will have to take the bought stuff home – But others, will try to damage the things you bought. When you reach your home, the score will be counted.