It's about Scarlett Johansson and totally awesome hot bass.
Need I say more?
It's a science fiction movie about what happens when a human (Johansson) utilizes more than 10% of her cerebral capacity. This is caused by a bag of fictional drug that is surgically placed inside her abdomen against her will by a drug lord.
Definitely a pure guy fun kick-butts movie with a great hot bass soundtrack.