In the beginning of the story, Old Major, the most respected animal on Manor Farm delivers a speech to the other animals; He is delivering the message of rebellion in hopes that the animals will be motivated to overthrow the tyrant and owner of the farm, Mr. Jones.
Mr. Jones, Napolean, and the animals are fighting over what thy think is right and their own freedom. Though for some parties think they are right, when really their ideology is very twisted and plan for the farm isn't functioning.
The animals throw out Mr. Jones. A problem rises amongst the pigs with who shall be the leader and in charge of the farm's affairs. The main two figures competing with one another were Napolean and Snowball, two very smart and cunning pigs.
To Manor Farm!!
Napolean drives out Snowball with the help of his personal guard dogs. Afterwards, Napolean decided that all the decisions would be made by the pigs and him only.
Napolean continues to seal his ultimate dictatorship over the animals of Animal Farm. Squealer throughout this time justifies Napolean's every unfair action with an adjusted version of the Animalist principles.
Napolean is always right!!
By the end of the story, the animals can't tell pig from man and man from pigs. The pigs stand on their hind legs as Napolean changes the name of Animal Farm back to Manor Farm.