Weighed down by guilt following the death of his two-year-old son, Mac McCann accepts a year-long position training police officers in Afghanistan. Leaving his wife Sophie to grieve alone, he hopes the life-or-death distractions of his self-imposed exile will build a wall between him and his pain. As camaraderie builds between Mac and the men on base--including a local barber and his precocious little boy--Mac's heart becomes invested in stories...