Eager to do her part for the war effort, rich young socialite Gladys Witham joins the secretarial pool at Victory Munitions. However, she is quickly drawn to the Blue Shift women who work on the factory floor, knowing full well her class-conscious parents would disapprove of any move by her to take on such a dangerous job.

A surprise inspection puts Victory Munitions employees under the gun, giving Lorna an opportunity to finally rid the factory of Marco, and Gladys must defend herself against a thief to prove an accused Kate's innocence.