This Aleppo family sacrificed everything to fight against the Syrian regime. But since the head of the family was kidnapped by so-called Islamic State, they face an impossible decision and an uncertain future. Filmmaker Marcel Mettelsiefen followed one family for three years as they struggled to survive in besieged Aleppo, eventually becoming refugees and fleeing to Germany. Watch part 1, Children on the Frontline on All 4: http://bit.ly/1eoNelB Watch part 2, Children on the Frontline: The Escape on All 4: http://bit.ly/1NqkH48