Doomsday: I have a super farm

A sudden disaster swept the world, and animals and plants died and mutated on a large scale. Food was in short supply, strange beasts were rampant, order was in chaos, and humans were on the verge of extinction. Those few high-ranking officials controlled the distribution of food, and the lower-level humans became slaves and machines for food. Human nature and the law of darkness were everywhere. Finally one day, people saw a video. It was a mysterious farm, with cattle and sheep on the hillside, green cucumbers, bright red tomatoes, and huge pumpkins in the fields. A young man and a little girl sat together, eating mutton, pig's trotters, and apples...