At RAF Fenthorpe, instrument repairer Thea is helping her sister, Pearl, plan her wedding alongside fellow WAAF and maid of honour Jenny. A misfit amongst the women on the base, though, Thea is struggling to get others onboard.

When Flight Sergeant Fitz makes a point of befriending and standing by her, sparks fly between the two. And when Fitz's crew member, Jack, faces being stripped of his rank due to cowardice, Thea throws herself into seeking justice and support for him.

Just as she begins to be accepted by her fellow WAAFs, a shadowy figure from her past has returned and is determined to ruin not just Thea, but also Pearl's wedding. Will Thea's reputation be marred once more? And will she face this struggle alone ...?