It's been a while since Luc Besson made a truly great film (that would be Angel-A in 2005) and Lucy isn't the film to end Besson's brave quest for renewed excellence. But it is the best film he has made in a long time and it's not unlike Besson's own The Fifth Element: a colorful sci-fi flick that may look like a crowd-pleaser from afar, but delivers exactly the opposite.
Lucy isn't an easy film to explain as it constantly hides between ideas and pretences it doesn't really care about. In essence, it's just a crazy roller coaster that aims to amuse and to incite wonder. To accomplish that, Besson digs up an old (and popular) scientific misinterpretation and goes from there. He dresses up the original theory with layer upon layer of scientific half-truths and uses that increasingly silly premise to have a little sci-fi fun.
The premise that humans only use 10 to 15% of their brain has been dismantled years ago, but that's not important. The point is that it's the kind of premise that makes people gaze up into the sky, maybe take a sip of their whiskey and has them pondering out loud about what humanity could be capable of if we unlocked our brain's full potential. It's the kind of premise that, when brought up in a film, asks for a "meaningful philosophical exploration" of the subject, possibly assisted by some equally thoughtful quotes and existential meanderings.
But no, Besson runs with the premise, states that the extra brain power will allow us to control our own body, other people's bodies, all matter and finally time itself, feeds his main character a drug that miraculously unleashes her brain's true potential and spirals everything into a gleeful mix of high-octane action and outrageous sci-fi, including big and bold percentage statistics in between the various stages of evolution. That's a big bummer for people who were already stroking their chin in anticipation, but it's all the more fun for people like me who enjoy the grotesque and shameless direction this film takes.
The premise of the film has another interesting side effect. Since Lucy becomes super powerful mere minutes after she has taken the drugs, there really isn't anyone on this planet who can stop her. So even though there are a few nifty action sequences, there's never any real threat from the bad guys or any sense of urgency besides the fact that Lucy has a limited time to live. Again Besson crushes the expectations of the audience, working his way to an almost Akira-like finale.
The final blow is probably Johansson's performance. As the film progresses she quickly loses her (presumed - I'm not a fan) charm and becomes this blank-eyed, transcendent, super-rational entity. Instead of this charming, sexy, ultra-cool killer you're looking at an omniscient, omnipotent god-like creature who doesn't give a damn about who's after her, only interested in sharing the knowledge she's gaining before she burns up.
Sadly Besson misses the mark when things get truly frantic. The CG isn't really up to par and the aesthetic qualities of the sci-fi bits are a bit meagre. While the idea and direction of the film is amazing, the execution isn't on the same level. That's my only real complaint. Besides that Lucy is a hell of a ride, though you have to be prepared to follow Besson's path rather than get stuck in your own preconceptions of where Besson should've taken this material.