Patricia Roc stars as Celia Crowson, an ordinary young woman determined to do her part for the war effort. Leaving her home, she takes a job in a factory and finds herself living in a hostel with other volunteers. Her fellow volunteers come from all walks of life and positions of society. They are all so very different - and yet united in their desire to defend Britain and see the menace of the Nazis defeated forever. The film follows the girls as they work together and discover the importance of friendship and true love.