I shall perish. I must perish in the deplorable folly. Thus, thus, and not otherwise, shall I be lost. I dread the events of the future, not in themselves, but in their results. I shudder at the thought of any, even the most trivial incident, which may operate upon this intolerable agitation of soul. I have, indeed, no abhorrence of danger, except in its absolute effect - in terror. In this unnerved - in this pitiable condition - I feel that the period will sooner or later arrive when I must abandon life and reason together, in some struggle with the grim phantasm, FEAR!
The unnamed narrator receives a letter from his friend, begging him to come. He sets off on horseback to the House of Usher. When he arrives, he feels extremely nervous.
The unnamed narrator is led by a servant to Roderick Usher. When he sees Usher, he is baffled by how much he has deteriorated. Usher is excited to see his friend, almost too excited. The narrator thinks Usher isn't being sincere in his burst of emotion, but soon realizes he is. Usher speaks about how happy he is to see the narrator and about his sickness.
The first night the unnamed narrator arrived at the House of Usher, Madeline, Usher's sister, dies. Later on, Usher decides he wants to preserve her corpse, for two weeks, in one of the vaults in the house, so together they put her corpse in a coffin, and put her in the vault.
After mourning the death of his sister, Usher roams around the house with no apparent goal. He stops doing everything he normally did, when the unnamed narrator first arrived, and he roams the house.
The unnamed narrator had been reading Usher a book. He had heard some strange noises but ignored them. After a while, he couldn't ignore them any longer, and jumped up terrified. He rushed over to Usher, who was mumbling nonsense. A few moments later, Madeline stood in the doorway. She fell in, on top of Usher, and they both died there.
The unnamed narrator, freaked out even more from both of their deaths, flees the house as it crumbles into the lake.