Mac guffin

A mac guffin is a plot element that catches the viewers attention or drives the plot of a work of fiction.
The defining aspect of a mac guffin is that the major players in the story are initially willing to do anything to obtain it.

• Sometimes the mac guffin is ambiguous and 
• completely irrelevant to the overall plot.
• The mac guffin is normally money,power or respect.
• Hitchcock defined the mac guffin as the object which the plot revolves around