During the carnival Montresor runs into Fortunato, and offers him a nice bottle of wine.However, this bottle is in catacombs. It is too late and Fortunato seems ill.
Fortunato had hurt Montresor's feelings a thousand times, but when fouttinato almost insulted him, he swears there will be payback.
Montresor and Fortunato start off toward the place where the Amontillado is, and Montresor is coming up with a plan to get revenge on Fortunato. Then Montresor realizes Fortunato's weakness which is alcohol and he's already drunk.