Fortunato insults Montresor leading to his taste for revenge against him. During a festival in Italy, Montresor runs into an intoxicated Fortunato and invites him for a glass of Amontillado wine in the catacombs.
The narrator, Montresor, doesn't reveal the insult Fortunato had delivered because it seemed unforgettable and not one to be forgiven. Fortunato does not know that agreeing to follow Montresor would lead to his fate and that he would never be seen again.
On the way down to Montresor's wine cellar, Fortunato is ill and him being in the dampened area worsens his cough. Suspense increases as Montresor continually asks if they should turn back and forget the wine. Fortunato simply laughs it off claiming the cough is nothing and sips more wine.
Once they have reached the Cask of Amontillado, the truth reveals. There was no wine but there was a secluded hole in the wall. Montresor takes advantage of Fortunato's drunken state and forces him into the hole placing chains around his wrists to hold Fortunato against the wall.
Montresor shortly starts placing bricks in front of the wall as Fortunato is slowly bricked up. Despite Fortunato's pleads for him to stop, Montresor places the last few bricks leaving one open space.
Before placing the last brick in place, Fortunato lets out one last scream, "For the love of god, Montresor!" Montresor then drops the torch into the hole and prepares the last brick and simply replies, "Yes, for the love of god." The final brick is sat into place and Montresor leaves satisfied. No one bothered the catacombs for merely 50 years.