Elizabeth Sloane is a formidable and successful lobbyist in Washington D.C., known for her ruthless tactics and strategic brilliance. When a powerful gun lobby approaches her to spearhead a campaign against a proposed gun control bill, she instead joins a small boutique firm fighting to pass the legislation. This decision sets her against her former employer and pits her against a series of high-stakes challenges. Her new team's resources are limited, and they must confront the well-funded opposition head-on. Sloane's unyielding commitment to winning by any means necessary raises ethical questions and puts immense pressure on her and her colleagues.

As the battle over the gun control bill escalates, Sloane's relentless pursuit of victory begins to take a personal toll. Her adversaries launch counterattacks that target her professional reputation and delve into her private life, exposing her vulnerabilities and dark secrets. She must navigate a complex web of political intrigue, legal repercussions, and strained alliances. Amid the escalating conflict, Sloane's determination to succeed forces her to confront the consequences of her methods and decisions, leading to a climactic showdown that tests the limits of her resilience and morality.