Set during the First World War, Our Tom is the story of Thomas Middleton, who upon hearing of the sinking of the Lusitania, enlists. What he discovers is that the welcome world of men and the regime of military life is not everything. And amid the turmoil of war he meets a fiery young nurse called Ella. On the eve of the third battle for Gaza, Tom and Ella are torn apart by rigid rules and a hidden secret.