Nottingham, WW2. War Artist Dame Laura Knight is commissioned to go back to her birthplace to paint propaganda portraits of factory girls. But her return home unleashes memories she has spent half a lifetime trying to forget.
Two munitions workers, Violet Smith and Zelah Fitzlord are bound to Laura in ways they don't yet know.
All three women have something to hide; will the night shift keep their secrets, or will the past explode into the present and change their lives forever?