In the wake of the Allies' victory in North Africa, 1,000 Italian soldiers have been sent to a remote island off the Scottish coast to wait out the war. Their arrival has divided the island's community. Nerves frayed from three years of war and the constant threat of invasion, many locals fear the enemy prisoners and do not want them there. Where their neighbors see bloodthirsty enemies, however, orphaned sisters Dorothy and Constance see sick and wounded men unused to the freezing cold of an Orkney winter, and volunteer to nurse them. While doing so Dorothy finds herself immediately drawn to Cesare, a young man broken by the horrors of battle. But as the war drags on, tensions between the islanders and the outsiders deepen, and Dorothy's connection to Cesare threatens the bond she shares with Constance. Since the loss of their parents, the sisters have relied on each other. Now, their loyalty will be tested, each forced to weigh duty against desire...until, one fateful evening, a choice must be made, one that will have devastating consequences.