About this "The Simpsons" episode:
The Simpsons - Treehouse of Horror II is the 7th episode of season 3 and number 42 overall in the series.
The episode is a Halloween special, actually is the second Halloween spacial of the series. As the one before and those after, it is composed from 3 short stories.
It begins with Homer, Bart and Lisa who eat way to much candy. While falling asleep they start to have nightmares and the above mentioned stories are in fact the nightmare of each one of them.
Lisa's nightmare:
The Simpsons visit Morocco and find a monkey's paw that makes all their wishes come true – with dire consequences.
Bart's nightmare:
The town of Springfield must think happy thoughts or suffer the powers of Bart's twisted imagination.
Homer's nightmare:
Mr. Burns kills Homer so he can transplant his brain into a robot to create a super-efficient worker.