Montresor was upset that Fortunato had done him wrong so many times, so he devised a plan to bring Fortunato to his immolation. Montresor decided that he should use one of Fortunato’s favourite things during his retribution: wine.
Fortunato! I have purchased what I believe is some Amontillado, but I cannot tell of it is fake. I was hoping you could help me, but if your'e too busy, I will go to Luchesi...
So, one night during Carnival, Montresor put Fortunato’s connoisseurship in wine to the test, and led a drunk Fortunato into his vaults, saying that he had purchased some Amontillado wine, but didn’t know if it was a fake.
No! Luchesi could not tell Amontillado from Sherry. Come, let us go.
Are you sure you can help me? Luchesi...
As Montresor and Fortunato made their way into the vaults, Montresor would often give Fortunato a leer look and ask Fortunato if he was well enough to help him, to which Fortunato would explicitly tell him he was alright.
He is an ignoramous! I am fine.
As Montresor and Fortunato continued walking, Montresor could tell that Fortunato was very drunk by his strange gesticulations.
Finally, Fortunato and Montresor came to a large dark opening in a wall. Montresor led Fortunato, who was too drunk to realize what was going on, into the hole and shackled him to a wall. As Montresor began to seal the hole shut, Fortunato came to and started to scream and shout for help. Montresor would stop every once and a while to listen to him cry, enjoying his revenge.
As Montresor finished sealing the wall, he left without a worry in the world. He had advised all of his servants to leave at a certain time so no one was home, and he had worn a mask at Carnival so no one saw his face. No one ever found out where Fortunato went, and no one suspected Montresor had killed him.