Cam Langley, a sharp-witted codebreaker at Bletchley Park, dresses like a man but makes no secret of who she is. Gloria Edwards, eager to escape her domineering father, joins the war effort and is quickly drawn into Cam's orbit.

Cam feels an immediate attraction, while Gloria is caught off guard, having only ever been with men. As they form a formidable team, their connection deepens, but a spy within Bletchley threatens to destroy everything.

With secrets swirling, can they survive the chaos of war, or will danger tear them apart?