Krista and Perry begin their perilous journey from England across Belgium and into Germany. They are posing as a rich young married couple. Can they pull off the ruse?Initially their mission was to rescue a renowned scientist and his wife. The information the man holds is vital if Britain - as it is becoming more and more likely - joins the war.Then everything changes, and their mission becomes more perilous than before.The pair must rely on their wits and one another as they travel across a world being torn apart by the threat of war.