High-concept is a type of artistic work that can be easily pitched with a succinctly stated premise. It can be contrasted with low-concept, which is more concerned with character development and other subtleties that aren't as easily summarized. The origin of the term is disputed.
High-concept narratives are typically characterised by an overarching "what if?" scenario that acts as a catalyst for the following events. Often, the most popular summer blockbuster movies are built on a high-concept idea, such as "what if we could clone dinosaurs?", as in Jurassic Park.
However, it is important to differentiate a high-concept narrative from an analogous narrative. In the case of the latter, a high-concept story may be employed to allow commentary on an implicit subtext. A prime example of this might be George Orwell's Nineteen Eighty-Four, which asks, "What if we lived in a future of totalitarian government?" while simultaneously generating social comment and critique aimed at Orwell's own (real world) contemporary society. Similarly, the Gene Roddenberry sci-fi series Star Trek went beyond the high-concept storytelling of a futurist starship crew, by addressing 20th century social issues in a hypothetical and defamiliarising context.