Leah, a teen girl living in St. Louis City, feels isolated and ignored after moving to a new neighborhood and being bused to a new school in an overwhelmingly white county. When Leah begins to observe behavioral changes in her little brother, through her research and experimentation she soon discovers that lead is the culprit. Now tasked with finding the source of the contamination and advocating for a systemic overhaul, a girl, once ignored, begins to find her voice.