Ireland, 1918. In a world brutalized by the Great War and devastated by the Spanish flu, 22-year-old Rynn Carmichael is suddenly pulled into the war of independence when Donal O’Reilly, the boy she has loved for most of her life, takes up gunrunning in support of the rebellion. Raised in a small Irish village on the shores of Donegal Bay, Rynn is working as a nurse in a convalescent home for soldiers wounded in the Great War when she overhears a British officer gloating over the trap that has been set for Irish gunrunners bringing a boat full of smuggled arms ashore. Knowing that Donal must be involved, she rushes out at midnight to warn the incoming boat, only to find herself caught up in a terrifying and tragic series of events.