S1, E1: This first episode begins as hundreds of thousands of refugees from Syria arrive in the Turkish port of Izmir. We meet eleven-year-old Isra'a, selling black-market cigarettes so that her extended family can pay smugglers to take them across the Mediterranean on a dinghy. But as they hear stories of more and more people drowning, her father Tarek is no longer sure if he can risk his children's lives... Meanwhile, 27-year-old Hassan, who is fleeing imprisonment and torture in his native Damascus, is desperate to make the crossing at all costs. He puts his life, and those of his travelling companions, in the hands of smugglers and boards a dinghy. As the overcrowded boat begins to take on water, the passengers face a life-and-death decision. In Syria, we film 24-year-old Anas as he prepares to leave the shattered city of Aleppo, with snipers firing at his departing taxi as he heads towards the Turkish border. And we meet Ahmad who, having left his wife and young family behind, is racing to get to Britain so he can get them out of their besieged town in Syria. But he's stalled on Kos as the Greek island is overwhelmed and the authorities struggle to cope.