After an accident during bomb testing which leaves a factory worker, Archie Arnott, critically injured, the factory comes under scrutiny regarding safety regulations. The girls on the Blue Shift line are blamed for the accident, which results in Gladys attempting to get the girls to stand up for themselves. Vera, recovering in the hospital, grows depressed about the condition her injury has left her in. Meanwhile, Kate poses for pin-up photos in order to obtain a fake security clearance form, and Lorna uses Marco's Italian background to raise suspicions about him, resulting in him being fired.