presents his idea to build a windmill, to produce electricity for the other animals, Napoleon calls nine strong dogs. The dogs drive Snowball from the farm and kill him, and Napoleon explains that Snowball was in-fact co-operating with Mr Jones. He also explains that Snowball in reality never had a medal of honour that Snowball was always trying to cover up that he was fighting on the side of Mr Jones. The animals then start building the windmill, and as time passes the working-time goes up, whereas the food rations decline. Although the "common" animals have not enough food, the pigs grow fatter and fatter. They tell the other animals that they need more food, for they are managing the whole farm. Some time later, the pigs explain to the other animals that they have to trade with the neighbouring farms. The common animals are very upset, because since the revolution there has been a resolution that no animal shall trade with a human. Shortly after this decision the pigs move to the farmhouse. The other animals remember that there is a commandment that forbids sleeping in beds, and so they go to the big barn to look at the commandments. When they arrive there they can't believe their eyes, some commandments been changed. For example "No animal shall kill another animal without reason".
Some months Mr Jones Friends attack the farm, and although the animals defend it, the windmill is destroyed. The pigs decide to rebuild the mill, and they cut down the food rations to a minimum. Because Boxer was wounded while fighting he becomes weak, one day Boxer breaks down. He is sold to a glue shop, but Napoleon tells the other animals that Boxer has been taken to a hospital where he has died. Years later, the mill is finally completed. During this time Napoleon deepens the relations with the neighbouring farm, and one day Napoleon even invites the owners of this farm for an inspection. They sit inside the farmhouse and celebrate the efficiency o...