Madeline Goddard, is a British double agent who meets and falls in love with a German spy Baron Karl Von Marwitz during World War I. This tale of espionage blends high adventure and romance making perfect order from wartime chaos and growing in faith from despair.

Lorna Blake, (Ursula Jeans) is a widow with two daughters. She augments her slender income by using her children to extort money - visiting the houses of the rich to tell a pathetic story and beg for help. And Lorna makes a rich capture when Sir Halmar Bernard, (Cecil Parker), proposes to her. She tells him that she has only one daughter, Molly (Jill Freud, credited as Jill Raymond). When her other daughter, Jay (Jean Simmons), is arrested for forging a cheque, she refuses to help her.

Hedda Gabler has just come back from her honeymoon, married to boring but reliable academic George Tesman. Refusing to tie herself down in life and name, Hedda is banking on George being appointed a professorship to secure a better life for the young couple, However, the arrival of cleaned up ex-lover Eilert threatens to destroy everything.

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'.