In 1942, a Sunderland flying boat with Pilot Roger Hunter and Flight Sergeant Charles Norman Lewis as crew, set out on a patrol, flying out of their Scotland air base.
In the pits of Hell, the board of directors decides to replace Satan (Alan Mowbray) with Adolf Hitler (Bobby Watson). Satan persuades them to give him 48 hours to save his job by getting Hitler to perform a single good deed.
The plot of this film was inspired by true events. During the early stages of World War II a prominent American businessman offered a reward of one million dollars to bring Adolf Hitler to justice, dead or alive. Russell Hicks plays the part of the American businessman in this film who hires three gangster ex-convicts released from Alcatraz prison. The gangsters are played by Ward Bond, Warren Hymer and Paul Fix.
Set during World War II, the plot involves the diminutive Arthur joining the army to prove himself to his girlfriend Susan (Evelyn Dall), who is in the same unit as him. Here, his idealistic notions about King Arthur prompt his messmates to trick him into believing that a sword they have dug up is the fabled Excalibur. Armed with this talisman Arthur strides forth to deal with the Wehrmacht.