On the edge of a crumbling city, 11-year-old Alexander (Jeremy Chabriel) lives in a sequestered commune alongside other children, their mothers, and charismatic leader, Gregori (Vincent Cassel). Gregori teaches the children how to raise livestock, grow vegetables, work as a community – and how to kill. With the birth of a new baby brother weighing on his mind, Alexander begins to question Gregoris overpowering influence on the children and their training to become assassins. Threatened by his increasing unwillingness to fall in line, Gregoris behavior turns erratic and adversarial toward the child he once considered a son. With the two set dangerously at odds and the communes way of life disintegrating, the residents fear a violent resolution is at hand in this Sundance award-winning thriller.