A struggling single mother, Erin, stumbles upon suspicious medical records while working at a small law firm. Intrigued, she begins to investigate and discovers a shocking connection between a major utility company and numerous unexplained illnesses in a small Californian town. Despite her lack of formal legal training, Erin doggedly pursues the case, uncovering evidence that the company has been contaminating the local water supply with toxic chemicals. Her determination impresses her boss, Ed, who allows her to take the lead on the case.

As Erin digs deeper, she earns the trust of the affected community, gathering personal testimonies and documents to build a solid legal argument. Her relentless pursuit for justice puts strain on her personal life, but she remains steadfast in her commitment to help the victims. Facing powerful opposition, Erin and Ed prepare for a challenging legal battle, aiming to hold the utility company accountable and secure compensation for the people whose lives have been devastated by corporate negligence.