In the exposition, Montresor talks about how he is going to get revenge on Fortunato. While on the topic of Fortunato, Montresor states,"He had a weak point — this Fortunato...- He prided himself on his connoisseurship in wine" (Poe, 3). Montresor is explaining how Fortunato has a alcohol problem. We can tell from this that Montresor is planning something.
As they are still at the carnival, Montresor is telling Fortunato about a very nice bottle of wine. The only problem was that it was in the catacombs. This is Montresor's was of luring Fortunato into the catacombs. Fortunato seems a bit ill, and accepts the offer.
Montresor lures Fortunato into the catacombs. While walking, Fortunato shows that he has a mild cough. Because of his obsession with wine, he exclaims,"It is nothing, let us go on. But first, another draught of the Medoc" (Poe, 53). Fortunate drinks wine to ease of the cough is is getting.
Montresor and Fortunato reach the catacombs. But Fortunate soon learns that it was all just a trick, and there was no wine there. Montresor chains Fortunate to the wall. He then starts sealing the entrance with breaks, to ensure that Fortunate can't escape.
Montresor continues to put the bricks for the wall. Fortunato starts screaming for Montresor to stop. Montresor responds by mocking him, as he continues to put up the bricks. Montresor's revenge is almost complete.
Montresor finally finishes the wall. As he is leaving the catacombs, he yells out Fortunato's name. He doesn't get a response back. Montresor is left with guilt, and tries to cover it up, as the story states,"My heart grew sick; it was the dampness of the catacombs that made it so. I hastened to make an end of my labour" (Poe,89).