It sounds like you haven't read the story. It's a shame, because "The Monkey's Paw" is an excellent short story.
SETTING. Laburnam Villa, an out-of-the-way home in a small English village.
CONFLICT. Sergeant-Major Morris has told a story about his mysterious monkey's paw, which supposedly grants each new owner three wishes. He tosses the paw in the fire to destroy it, but Herbert, the Whites' son, saves it. Morris urges them to rid themselves of the paw.
EVENTS. After Herbert saves the paw from the fire, the Whites keep it and begin their sting of wishes. Their wishes do not turn out exactly as planned.
CLIMAX. After receiving terrible news concerning their son's accident at work, the Whites are further horrified to find that their first wish has actually come true.
ENDING. After making a second wish that apparently does come true, a knock is heard on the door. Realizing that their second wish may have come true in the most horrible manner possible, Mr. White quickly uses his third wish. The door is opened--but no one is there.