While the Griffins are watching a golf tournament, the power goes out. To entertain the family, Peter decides to tell the story of Star Wars, beginning with Part IV. The rest of the episode is set in the Star Wars universe, with the characters from Family Guy cast as Star Wars characters.
Dictionaries-Smith's Bible Dictionary-Fable. A fable is a narrative in which being irrational, and sometimes inanimate, are, for the purpose of moral instruction, feigned to act and speak with human interests and passions. --Encyc.
The theme of a fable is its moral. The theme of a parable is its teaching. The theme of a piece of fiction is its view about life and how people behave. In fiction, the theme is not intended to teach or preach. In fact, it is not presented directly at all. You extract it from the characters, action, and setting that make up the story.