Pit and the Pendulum

1) What is the story of P&P about?

The Pit and Pendulum is about a man who is sentenced to death by three judges. When he wokes up he was very confused and he found a pit with water in his dark cell. Then, he woke up in a different room.  From the ceiling there was a sharpened pendulum hanging  and he tried to scape, but he was tied with knots. There were mice eating some meat in the same room with the man. The man thought that he will die but he got an idea. He put meat in the rope to the mice and they began to eat the meat of the rope while the pendulum descend. The walls were getting closer to him. Finally, an arm pulled him and the walls stopped moving.