Richard Williams is a determined and tenacious father with a clear vision of the future for his two daughters, Venus and Serena, whom he believes are destined for tennis greatness. Living in Compton, a tough neighborhood in Los Angeles, Richard juggles his unwavering resolve to train his girls with the skepticism and criticism of those who doubt his unconventional methods. Under his rigorous and often unorthodox coaching regimen, he develops a detailed plan that outlines their path to becoming professional athletes, despite not having a formal background in tennis. Richard's wife, Oracene, supports this endeavor while ensuring that the girls remain grounded and maintain their education and sense of humility.

Despite financial hardships, lack of resources, and the challenges that come with raising a family in a community beset with obstacles, Richard's commitment never falters. He hustles to secure opportunities for Venus and Serena, emphasizing discipline, hard work, and family values. However, as his daughters' talents become undeniable, Richard must navigate the competitive world of junior tennis, facing off against elite coaches and gatekeepers of the sport who question his methods and suitability as a coach. Confronted with racism, intense scrutiny, and the pressure of his daughters' burgeoning success, Richard's resolve is tested, leading to a pivotal point where he must decide between his iron-clad plan and the fast-changing landscape of the professional tennis realm.