The expotion of this story is that when Montresor is introduced and he wants to seek reveange on Fortunato is a wine taster and Fortunato seems to be completey unaware that Montresor is the emeny.
"No one insults me with impunity"
The rising action is when Montresor bring Fortunato to his catacombs. He wants Fortunati to drink his expensive wine which is Amontillado. Fortunato is really intoxicated and doesn't know where he is at.
The climax is when Montresor chains up Fortunato. Fortunato scream to take him out but Montresor doesn't take him out.
The falling action is that Fortunato stop screaming for help. Montresor throws a torch in the catacomb and he only hears the bells on Fortunato costume. Mortresor also built a wallso some finds him.