Fotunato and Montresor are at a party. they go to get some wine,a special wine called amontillado. Fortunato has no idea Montresor wants to kill him. this is exposition because it explains the plot and characters.
Montresor has lead Fortunato to his wine cellar. Fortunato want to try the the expensive wine. This is rising action because this an event leading to the end.
They walk down the long hallway in the cellar. eventually they make it to a room deep in the cellar. montresor takes fortunato and chains him up.This is the climax because this the turning point of the story.