Naïve but determined, Captain Edward Eldridge refuses to ride out the war from the safety of headquarters and demands a post on the Belgian front line. Shocked by the futility of trench warfare, Edward regrets his fervent support for a war he no longer understands. Amid the brutal fighting, news from Dublin reveals a battle brewing much closer to home. After being saved from certain death by a man he once thought an enemy, he questions the rigid truths of the world he thought he knew. Meanwhile, from her post as a housekeeper for a prominent loyalist family, Nora Cullen and her circle of rebels quietly mobilize Dublin to fight for Irish freedom. As she races to uncover her employer's own secret network, she learns of a deadly betrayal. Steeled by tragedy, Nora seeks a revenge that could cost her life when an unlikely ally befriends her and changes her course.