At the Carnival in Italy Montresor found Fortunato. Montresor offered a cup of Amontillado wine to Fortunato but this bottle was in his catacombs. Fortunato seemed sick and it was late.
Montresor was angry at Fortunato because he claimed that Fortunato deeply insulted him. Montresor wanted revenge. Even though Montresor hasnt revealed what Fortunato had done, he makes it known that it was unforgivable.
Fortunato walked down into the catacombs with Montresor while drinking the glass Amontillado. Montresor asked Fortunato if he wanted to go back because he seemed ill. Fortunato kept drinking wine to soothe his cough.
When they got to where the Amontillado was said to be, it wasn't there. But there was a hole in the wall. Montresor shackled Fortunato in the hole and began to cove the opening with bricks.
While Montresor finishes up the wall, Fortunato screams for him to stop but its too late.
Montresor finishes filling the hole, trapping Fortunato forever. Montresor put the bones back in the crypt and left. In the end he claims that no one has disturbed them for over 50 years. Montresor had gotten away with his plot.