The main character was telling the story of how he ended up in jail. Since the next day is when he will be hung for the murer he commited.
Before his temper got the best of him, he was sane and had a wife. They had birds, a goldfish, a dog, and a black cat named Pluto.
His temper got worse and he started to hate Pluto. He sliced Pluto's eye out and after that he hung him from the tree. Almost immediately after he starts to cry because he knows that he cat loved him and that he loved the cat too.
One day he found a cat that looked almost the same as Pluto. He was even missing an eye. The difference was that he had a white underbelly. Since it reminded him a lot of Pluto, he took it home.
One day the main character and his wife got in an argument. When he saw the cat he got an axe and tried to swing at it. Instead, he missed the cat and slung the axe at his wife's head and killed her instantly.
He hid the body in a wall that he built. When the police came to investigate he wanted to show them how there was nothing there so he knocked on the wall. But when he did that there was a loud wailing sound. The police knocked down the wall and they discovered the body of his wife. He had built the cat in on accident.