Filmmaker Josh Fox travels the United States along the Marcellus Shale formation to uncover the negative environmental and health effects of fracture drilling as a means of extracting natural gas.

Erin Brockovich is a feisty young mother who convinces attorney Ed Masry to hire her and promptly stumbles upon a monumental law case against a giant corporation. Erin's determined to take on this powerful adversary even though no law firm has dared to do it before. The two begin an incredible and sometimes hilarious fight that will bring a small town to its feet and a huge company to its knees.