Over the course of a midsummer night in Fermanagh in 1890, an unsettled daughter of the Anglo-Irish aristocracy encourages her father's valet to seduce her.
Ava is a deadly assassin who works for a black ops organization, traveling the globe specializing in high profile hits. When a job goes dangerously wrong she is forced to fight for her own survival.
The working-class Smiths change their initially sunny views on World War I after the three boys of the family witness the harsh reality of trench warfare.