Schoolteacher Bertram Cates is arrested for teaching his students Darwin's theory of evolution. The case receives national attention and one of the newspaper reporters, E.K. Hornbeck, arranges to bring in renowned defense attorney and atheist Henry Drummond to defend Cates. The prosecutor, Matthew Brady is a former presidential candidate, famous evangelist, and old adversary of Drummond.

Two great lawyers argue the case for and against a science teacher accused of the crime of teaching evolution.

Based on a real-life case in 1925, two great lawyers argue the case for and against a science teacher accused of the crime of teaching evolution.

A young man, Bert Cates, is arrested in a small Bible Belt town for teaching the theory of Evolution in the public school. Two of the finest legal minds in the U.S. are called to the trial: Henry Drummond for the defense, and Matthew Harrison Brady for the prosecution. The trial proceeds on three levels, the guilt or innocence of Cates, the issue of the Bible vs. Darwin, and finally, the personal confrontation between Drummond and Brady.