Who said Hollywood needed to base their high concept movies on actual facts? The idea that we only use 10% of our brain capacity might be a proven myth but that's no reason why the myth can't be taken as fact if there's a potentially awesome film to be made from it. Lucy centres around the titular character (played by Scarlett Johannson) who gets caught up with a bunch of very nasty gangsters who inject her with a new synthetic drug called CPH4. Before long her brain starts functioning at an increasingly high level, giving her a distinct advantage over the bad guys who are desperate to track her down and retrieve their product from inside her abdomen. Increased brain functioning might mean a more cerebral and interesting movie in the hands of some directors, but since Lucy was made by Luc Besson what we inevitably got was an incredibly silly film which fuses sub-Matrix ideas of the transcendental potential of human experience with daft action scenes.