Britain's greatest cyclist. A lifetime of victory. One family's cost. An intimate portrait of obsession, sacrifice and the price of sporting success.

Between shifts on a Yorkshire rhubarb farm, Beryl Burton won seven World Championships, beat men's records and went undefeated for twenty-five years. Obsession: The Beryl Burton Story is a deeply personal portrait of an athlete whose obsession came at a price, not least her relationship with her daughter Denise, who followed her into the sport. Through unseen archive, personal letters and intimate interviews, the film traces Burton's extraordinary achievements and the toll they took closer to home. Rooted in the Yorkshire landscape that defined her life, this is a story of ambition, sacrifice, sexism and legacy, and everything obsession touches.