In fiction, a MacGuffin (sometimes McGuffin or maguffin) is a plot device in the form of some goal, desired object, or other motivator that the protagonist pursues, often with little or no narrative explanation. The specific nature of a MacGuffin is typically unimportant to the overall plot. The most common type of MacGuffin is a person, place, or thing (such as money or an object of value). Other more abstract types include victory, glory, survival, power, love, or some unexplained driving force.
The MacGuffin technique is common in films, especially thrillers. Usually the MacGuffin is the central focus of the film in the first act, and thereafter declines in importance. It may reappear at the climax of the story but sometimes is actually forgotten by the end of the story. Multiple MacGuffins are sometimes derisively identified as plot coupons.