From the introduction:
December 1944. A B-29 Superfortress bomber flies towards an air force base in Arizona. The plane’s further destination is unknown to its pilots. Four women sit in the cockpit. For the last year and a half, they have sacrificed themselves for a nation at war.
August 1943. The same four women meet in a barrack in Texas. To the outside world, they are unknown, to the war, they are unwanted, and to the US army they are a necessary evil. They will each endure insults, distrust, and ridicule. Through the war, they will find kindred spirits in each other, and together they will be invincible. No matter what else might occur, they will always have their memories of the plane. The unfathomable, tactile sense of flying as the only refuge of absolute freedom. High-flying, anxiety provoking, discouraging, untamable, deep-felt, wild. Friends in arms, always. Resistance is something to overcome. Life is, until it ends.