A man takes his daughter to a pop concert, only to discover when he arrives that the whole thing is a sting operation set up by the FBI to try and entrap a dangerous criminal. Although the concert is real, the venue is swarming with police and special agents, watching the audience like hawks in the hope of finally catching the fugitive they've been chasing for months. It sounds like something from a movie - and that's exactly what it is.
Trap is the latest release from M. Night Shyamalan, a director famous for high-concept films with big twists such as The Sixth Sense. But the events of the film are actually inspired by a real-life case from four decades ago, known as Operation Flagship.
The 1985 sting saw more than 100 criminals arrested after they were lured to a fake TV station thinking they had won free NFL tickets. Around 3,000 fugitives were offered complimentary tickets to watch a Washington Redskins game, and were told they'd also have the chance to win an all-expenses-paid trip to the Super Bowl. But when nearly 120 of them turned up at the headquarters of a fictional TV company, they were arrested.
It is an extraordinary story, which provided the film's stimulus. "I heard about it when I was a kid and I thought it was totally absurdist, that this actually happened," Shyamalan tells BBC News. "It was something that was in my head a lot when it happened.
.. This was real-life criminals, FBI and police.
They dressed up as cheerleaders and mascots and were dancing around.