"Tell this soul with sorrow laden if, within the distant Aidenn, It shall clasp a sainted maiden whom the angels name Lenore-"
It's midnight on a dreary winter night and a man sits reading. He is almost asleep.
"Leave my loneliness unbroken! - quit the bust above my door! Take thy beak from out my heart, and take thy form from off my door!"
The man asks the bird question after question, and it refuses to say anything other than "nevermore".
The man desperately asks if he will ever see Lenore again.
After the raven tells the man that he will never see Lenore again, he becomes angry and begins shrieking at the bird, ordering it to leave and never return.
The raven replies to the mans's outburst with 'nevermore'.
The raven remains sitting above the man's chamber door, motionless. The man observes it and the shadow it casts, and deduces that his soul will never rise to the same place as Lenore (which is presumably heaven).