David Reimer loses his penis in a botched circumcision at eight months old, and on the advice of psychologist John Money, his parents agree to raise him as a girl named Brenda. Money holds up the case for decades as proof that gender is learned, not innate, and publishes it as a psychology textbook success story while the truth stays hidden. The film interviews David himself, by then living again as a man, along with his twin brother Brian, who serves as the built-in control for Money's experiment, and his parents, who describe the pressure to keep enforcing an identity that never took. Archival footage of Money's public claims sits next to the family's account of what was actually happening at home: David's refusal to act like a girl, his eventual reassignment back to male at fourteen, and the depression that followed both siblings into adulthood. The interviews are plain and specific about names, dates, and decisions, and the film lets the gap between the published case study and the lived reality speak for itself.