The story of the conception of a new British weapon for smashing the German dams in the Ruhr industrial complex and the execution of the raid by 617 Squadron 'The Dam Busters'.
Race car driver Alan Colby and his new wife Denise are involved in a car crash where he sustains a serious head injury, causing him to have murderous feelings toward Denise. After Denise persuades him to honeymoon with her on the Cote D'Azur in France, they enlist the aid of a French psychiatrist who offers to regress Alan back to the time of the accident and cure him.
On leave in Italy, Lt. Tommy Knowlton falls in love with Jean Standish, who's not only married, but is the daughter of his submarine's commander. Friction between the two officers becomes intolerable once at sea and after Commander Toler is forced to abandon Tommy's best friend topside while the sub dives to escape enemy planes, Tommy is no longer able to contain his anger.
