Test your logline here before spending months in development. This is not a contest, there are no prizes. However, you WILL get invaluable help in sharpening your concept and refining your logline. Make sure to start here.
How about this: Over the course of one night, a meek nobody is taken hostage and forced to help a violent, apathetical criminal on a crime spree, while being chased by the police who believes him to be an accomplice.