August1944.WiththeAmericanEighthAirForcepoisedtostrikeoverNaziGermany,BritishIntelligencelearnsthattheycouldbeflyingintoadeadlytrap.Withonlyhourstospare,FlightLieutenantEdwardBarnesmustflyalifeanddeathmissionoverBerlininhisunarmedSpitfiretoobtainphotographicevidenceandsavethelivesof1200men.