Ireland 1913, on the eve of the First World War: Matt Wrenn and Con Hatchel, inseparable friends, join the British army in search of escape, adventure, the wonder of exotic lands and the security of regular money in their pockets. To some they are making something of their lives; to others, they are traitors to Ireland. As they sail to their first posting in India, they find themselves diverted to France - to the fields 'made liquid by the blood and guts of boy soldiers'. For four years Con and Matt became part of the terrible savagery of the Somme, Ypres and Passchendaele. Back home in the Irish Midlands, Con's sister and Matt's sweetheart, Kitty, recalls their carefree childhood on the banks of the local canal, and hopes for a future after the war. But as the lads battle for survival amidst the horror of the trenches, the Easter Rising begins to cast divisive shadows across the country.