Filmed with the full cooperation of the U.S. Army, Breakthrough is a lean, no-nonsense war film set during the 1944 invasion of the continent.

On an airliner bound for Hong Kong, Tony, a career crook who deals in stolen diamonds, agonizes over whether he should stick with his girlfriend or pursue Pamela, an intriguing novelist with whom he's instantly infatuated. Viewing Tony's dastardly deeds as great material for her new book, Pamela gladly encourages him to continue his criminal behavior.