The true story of three inmates who attempt a daring escape from the infamous prison, Alcatraz Island. Although no-one had managed to escape before, bank robber Frank Morris masterminded this elaborately detailed and, as far as anyone knows, ultimately successful, escape. In 29 years, this seemingly impenetrable federal penitentiary, which housed Al Capone and "Birdman" Robert Stroud, was only broken once by three inmates never heard of again.