Various shots of jail on Alcatraz island, an aeroplane flies over and coastguard boats sail around during the gun battle as prisoners stage a revolt. Various shots as prison wardens wave journalists away from the island. M/S as Pathe cameraman Frank Vail films the battle. Grenades are thrown into the convicts' stronghold by the marines, various shots of smoke coming out of the windows, bushes on the island are set ablaze by the return fire.