During the carnival in Italy, Montresor tells the story of how he got revenge on Fortunato
The conflict in this story between Montresor and Fortunato is that Montresor is planning to get revenge on Fortunato for insulting him and doing him wrong too many times.
Montresor takes Fortunato down to his wine vault. Fortunato is sick, and everytime Fortunato coughs, Montresor tells Fortunato to take a sip of whiskey to sooth his throat. In reality, Montresor is trying to get Fortunato more drunk.