The Lord Protector is far away; Lady Tethys must defend the fortress of the Women's Regiment. Barely returned from their mission to ruinous Silveneir, the bold Rifles of the Women's Regiment head home, only to face a siege! Suborned by Dacoits, the Regimental garrison of Fort Jiar have turned against them, and now lay siege to New Adathen. With Lady Tethys to lead them, the all-singing, all-fighting girls of the Women's Regiment take centrestage in a bawdy, blood-soaked epic.