Vashti McCollum lives in Champaign, Illinois, in the 1940s, when her ten-year-old son Terry is pulled out of his public school classroom and made to sit alone in the hallway because she has refused to let him attend the released-time religious instruction offered there. The film follows how that small, humiliating exclusion turns into McCollum v. Board of Education, the 1948 Supreme Court case that struck down religious instruction in public schools and became a foundation for the modern reading of church-state separation in the First Amendment. Interviews and archival material trace what the case cost the McCollum family at the time, including threats and social ostracism in their own town, against how little the case is remembered now compared to the rights it secured. The film's argument is plain: constitutional protections people take for granted did not appear on their own, they exist because one mother in one Illinois school district was willing to fight a lawsuit to the country's highest court. Peabody and Emmy honors mark it as a notable piece of legal and civic history.