The “high concept” movie (a much-abused term) is one whose premise can be summed up in a sentence, if not within the title itself — for instance, what happens when a bored married couple’s “Date Night” goes wrong? Wacky fun!
The ideas is that the easy hook goes over well with your stereotypical movie executive — it becomes the selling point rather than the actors or characters. If it sounds irresistible (and/or ridiculous), people will show up hoping to see exactly what they were promised (a premise “Snakes On A Plane” took to its logical conclusion)…
High concept premise: A serial killer takes down his victims based on their violations of the seven deadly sins.
High concept premise: Pauly Shore and Stephen Baldwin get trapped in, yes, a biodome.