The B-29 Superfortress arrives late in the Pacific war as the most expensive weapons program the United States had ever built, more costly even than the Manhattan Project it would eventually help deliver. This film traces the aircraft from drawing board to combat, using restored archival footage to cover the pressurized cabins and remote-controlled gun turrets that made it an engineering leap over earlier bombers. It follows the crews who flew from hastily built airfields in China before the campaign shifted to the Mariana Islands, and the shift from high-altitude precision raids to the low-level incendiary attacks that devastated Tokyo. Newsreel footage of assembly lines, briefing rooms, and burned-out Japanese cities sits alongside a chronological account of how American air power moved from the desperate defensive posture of 1942 to outright supremacy by 1945. Narration keeps the focus on the machine and the mission planning behind it, treating the Superfortress as the hinge on which the closing phase of the Pacific war turned.