Montressor is a bitter man who wants revenge against his associate named Fortunato because he spoke ill of him.
Montressor tells us of his plan to kill Fortunato which he has been planning for months. Montressor runs in to Fortunato at the carnival.
Montressor tells his drunken friend (Fortunato) that he bought a pipe of Amontillado and his Fortunato wants to try it. The entire time Montressor keeps giving Fortunato wine eventually they end up in the catacombs.
Montressor chains Fortunato to a wall in the catacombs and builds a wall to conceal him.
Montressor stabs at Fortunato through a hole in the wall and drops a flaming torch in and finishes patching up the hole.
Over half a century later the wall is still there untouched.