After being captured and forced to be a drug mule with a new substance, Lucy (Scarlett Johansson) is beaten and the drug begins to seep into her system. It seems that the drug allows the human to access the 90% of the brain that they don’t use, and that makes you totally magic. And Morgan Freeman is in it.
I knew that getting past the “science” was going to be tough. It is not true that we only use 10% of our brains, and there is no way that we could function if we did. But I thought I might be able to let it go… I couldn’t. There are so many other ways this could have been written to make it less ridiculous and unreal, and to have to swallow Morgan Freeman’s scientist saying “oh, yes, 10%”. The action of the film was great, and I’m quite a fan of Scarlett Johansson, but this is not a great film.
ireckonthat 
I quite like Scarlett Johansson, but I wish she were more selective about her roles?